dwl-patches overhaul

Eliminated wiki.
Individual patches have a README.md explanation in their own subdirectory.
Simplified submission of new patches and maintenance of existing patches.
Instructions page (README.md autodisplayed) is now at https://codeberg.org/dwl/dwl-patches/

patches/keycodes/README.md

@@ -0,0 +1,18 @@
+### Description
+Use keycodes instead of keysyms. This way, input is independent from keyboard layout (you can use the keys.h file to customize, or get the keycodes with `wev` or `xkbcli interactive-wayland` (x11-libs/libxkbcommon[tools] in gentoo)).
+
+### Download
+- [git branch](https://codeberg.org/sevz/dwl/src/branch/keycodes)
+- [2023-11-25](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/keycodes/keycodes.patch)
+
+### Config after patching 
+(run in DWL source directory)
+```
+export XKB_DEFAULT_VARIANT=yourbestkeyboardlayout
+cc -lxkbcommon -o generate-keys generate-keys.c
+./generate-keys
+sudo make install
+```
+
+### Authors
+- [sevz](https://codeberg.org/sevz)