Move uncritical files into `etc/` (#350)

This is mainly just to reduce the amount of files in the project root.
The criteria of what gets into `etc/` are the following:

* The file should not be necessary for building nsxiv. This excludes the
  `icon/*` stuff since that's needed by `window.c`.
* The file shouldn't have any valid reason to stay in the project root.
  This excludes things like `README.md`, `.gitignore` etc.

Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/350
Reviewed-by: explosion-mental <explosion-mental@noreply.codeberg.org>

16 files changed, 13 insertions, 13 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c9269de..cfa9e1b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,7 +21,7 @@ jobs:
         ( cd "tinycc-$TCC_SHA" && ./configure && make && sudo make install; )
     - name: build
       run: |
-        CFLAGS="$(sed '/^#/d' .woodpecker/CFLAGS | paste -d ' ' -s)"
+        CFLAGS="$(sed '/^#/d' etc/woodpecker/CFLAGS | paste -d ' ' -s)"
         build () {
           for cc in "gcc" "clang" "tcc"; do
             echo "### $cc - $2 build ###"
diff --git a/Makefile b/Makefile
index cc8f3ce..04d2ed7 100644
--- a/Makefile
+++ b/Makefile
@@ -66,7 +66,7 @@ install-all: install install-desktop install-icon
 install-desktop:
 	@echo "INSTALL nsxiv.desktop"
 	mkdir -p $(DESTDIR)$(PREFIX)/share/applications
-	cp nsxiv.desktop $(DESTDIR)$(PREFIX)/share/applications
+	cp etc/nsxiv.desktop $(DESTDIR)$(PREFIX)/share/applications
 
 install-icon:
 	@echo "INSTALL icon"
@@ -91,12 +91,12 @@ install: all
 	chmod 755 $(DESTDIR)$(PREFIX)/bin/nsxiv
 	@echo "INSTALL nsxiv.1"
 	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
-	sed "s!EGPREFIX!$(EGPREFIX)!g; s!PREFIX!$(PREFIX)!g; s!VERSION!$(VERSION)!g" nsxiv.1 \
-		>$(DESTDIR)$(MANPREFIX)/man1/nsxiv.1
+	sed "s!EGPREFIX!$(EGPREFIX)!g; s!PREFIX!$(PREFIX)!g; s!VERSION!$(VERSION)!g" \
+		etc/nsxiv.1 >$(DESTDIR)$(MANPREFIX)/man1/nsxiv.1
 	chmod 644 $(DESTDIR)$(MANPREFIX)/man1/nsxiv.1
 	@echo "INSTALL share/nsxiv/"
 	mkdir -p $(DESTDIR)$(EGPREFIX)
-	cp examples/* $(DESTDIR)$(EGPREFIX)
+	cp etc/examples/* $(DESTDIR)$(EGPREFIX)
 	chmod 755 $(DESTDIR)$(EGPREFIX)/*
 
 uninstall: uninstall-icon
diff --git a/README.md b/README.md
index 9a047f2..bcefea8 100644
--- a/README.md
+++ b/README.md
@@ -15,10 +15,10 @@ under GPLv2 and aims to be easy to modify and customize.
 
 Please file a bug report if something does not work as documented or expected on
 [Codeberg] after making sure you are using the latest release.  Contributions
-are welcome, see [CONTRIBUTING.md] to get started.
+are welcome, see [CONTRIBUTING] to get started.
 
 [Codeberg]: https://codeberg.org/nsxiv/nsxiv/issues/new
-[CONTRIBUTING.md]: CONTRIBUTING.md#contribution-guideline
+[CONTRIBUTING]: etc/CONTRIBUTING.md#contribution-guideline
 
 
 Features
@@ -185,7 +185,7 @@ or by using Xresources as explained in the manual. If these options are not suff
 you may implement your own features by following
 [this guide](https://codeberg.org/nsxiv/nsxiv-extra/src/branch/master/CUSTOMIZATION.md).
 
-Due to our limited [project scope](CONTRIBUTING.md#project-scope), certain features or
+Due to our limited [project scope](etc/CONTRIBUTING.md#project-scope), certain features or
 customization cannot be merged into nsxiv mainline. Following the spirit of suckless
 software, we host the [nsxiv-extra](https://codeberg.org/nsxiv/nsxiv-extra) repo where users
 are free to submit whatever patches or scripts they wish.
@@ -206,7 +206,7 @@ on CodeBerg or get a copy using git with the following command:
 
     $ git clone https://codeberg.org/nsxiv/nsxiv.git
 
-You can view the changelog [here](CHANGELOG.md)
+You can view the changelog [here](etc/CHANGELOG.md)
 
 
 Similar projects
diff --git a/CHANGELOG.md b/etc/CHANGELOG.md
index 100e24a..100e24a 100644
--- a/CHANGELOG.md
+++ b/etc/CHANGELOG.md
diff --git a/CONTRIBUTING.md b/etc/CONTRIBUTING.md
index 93e0552..8d9680f 100644
--- a/CONTRIBUTING.md
+++ b/etc/CONTRIBUTING.md
@@ -23,7 +23,7 @@ Contribution Guideline
 When contributing, make sure:
 
   * Your contribution falls under nsxiv's scope and aim
-  * You follow the existing code style (see [.editorconfig](.editorconfig))
+  * You follow the existing code style (see [.editorconfig](../.editorconfig))
   * You open the pull request from a new branch, not from master
   * To avoid using force pushes, especially for bigger patches. Only use them
     when there's merge conflicts.
@@ -68,7 +68,7 @@ For releases, the process is the following:
     the commit message and tag description for the release commit to "Release
     version N". Make sure to use an annotated tag.
   * Update `VERSION` macro in `config.mk`.
-  * Update the changelog (`CHANGELOG.md`):
+  * Update the changelog (`etc/CHANGELOG.md`):
     * Include link to the release tarball and add the release date.
     * Document only the changes or fixes between releases. Don't document
       changes which never made it into a release.
diff --git a/examples/image-info b/etc/examples/image-info
index 5f06123..5f06123 100755
--- a/examples/image-info
+++ b/etc/examples/image-info
diff --git a/examples/key-handler b/etc/examples/key-handler
index 3fe741d..3fe741d 100755
--- a/examples/key-handler
+++ b/etc/examples/key-handler
diff --git a/examples/thumb-info b/etc/examples/thumb-info
index b422f9c..b422f9c 100755
--- a/examples/thumb-info
+++ b/etc/examples/thumb-info
diff --git a/examples/win-title b/etc/examples/win-title
index 31994ef..31994ef 100755
--- a/examples/win-title
+++ b/etc/examples/win-title
diff --git a/nsxiv.1 b/etc/nsxiv.1
index f4801b0..f4801b0 100644
--- a/nsxiv.1
+++ b/etc/nsxiv.1
diff --git a/nsxiv.desktop b/etc/nsxiv.desktop
index de90437..de90437 100644
--- a/nsxiv.desktop
+++ b/etc/nsxiv.desktop
diff --git a/.woodpecker/CFLAGS b/etc/woodpecker/CFLAGS
index 57d7d16..57d7d16 100644
--- a/.woodpecker/CFLAGS
+++ b/etc/woodpecker/CFLAGS
diff --git a/.woodpecker/analysis.yml b/etc/woodpecker/analysis.yml
index c6fa796..35cef7f 100644
--- a/.woodpecker/analysis.yml
+++ b/etc/woodpecker/analysis.yml
@@ -18,7 +18,7 @@ pipeline:
           *.c
       }
       run_tidy() {
-        checks="$(sed '/^#/d' .woodpecker/clang-tidy-checks | paste -d ',' -s)"
+        checks="$(sed '/^#/d' etc/woodpecker/clang-tidy-checks | paste -d ',' -s)"
         clang-tidy --warnings-as-errors="*" --checks="$checks" --quiet *.c \
                    -- -std="$std" $(make OPT_DEP_DEFAULT="$1" dump_cppflags)
       }
diff --git a/.woodpecker/build.yml b/etc/woodpecker/build.yml
index fdcf68c..603fa0e 100644
--- a/.woodpecker/build.yml
+++ b/etc/woodpecker/build.yml
@@ -14,7 +14,7 @@ pipeline:
       wget "https://github.com/TinyCC/tinycc/archive/$TCC_SHA.tar.gz" >/dev/null
       tar xzf "$TCC_SHA.tar.gz" >/dev/null
       ( cd "tinycc-$TCC_SHA" && ./configure --config-musl && make -s -j"$(nproc)" && make install; ) >/dev/null
-      CFLAGS="$(sed '/^#/d' .woodpecker/CFLAGS | paste -d ' ' -s)"
+      CFLAGS="$(sed '/^#/d' etc/woodpecker/CFLAGS | paste -d ' ' -s)"
       build () {
         for cc in "gcc" "clang" "tcc"; do
           echo "### $cc - $2 build ###"
diff --git a/.woodpecker/clang-tidy-checks b/etc/woodpecker/clang-tidy-checks
index 3c6c62e..3c6c62e 100644
--- a/.woodpecker/clang-tidy-checks
+++ b/etc/woodpecker/clang-tidy-checks
diff --git a/.woodpecker/spell.yml b/etc/woodpecker/spell.yml
index a184092..a184092 100644
--- a/.woodpecker/spell.yml
+++ b/etc/woodpecker/spell.yml