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/modes/README.md

@@ -0,0 +1,35 @@
+### Description
+Implement  modes, that way each mapping is associated with a mode and is only active while in that mode, default mode is `NORMAL`
+
+### Example
+
+In the example below, you declare a mode: `BROWSER`, which is activated when you press <kbd>modkey</kbd> + <kbd>b</kbd>. Then, you can press <kbd>f</kbd> to launch `Firefox` and return to the default `NORMAL` mode.
+
+```c
+enum {
+  BROWSER,
+};
+const char *modes_labels[] = {
+  "browser",
+};
+
+static const Key keys[] = {
+  // ...
+  { MODKEY, XKB_KEY_b, entermode, {.i = BROWSER} },
+  // ...
+};
+
+static const Modekey modekeys[] = {
+  /* mode      modifier                  key                 function        argument */
+  { BROWSER, { 0, XKB_KEY_f, spawn, SHCMD("firefox") } },
+  { BROWSER, { 0, XKB_KEY_f, entermode, {.i = NORMAL} } },
+  { BROWSER, { 0, XKB_KEY_Escape, entermode, {.i = NORMAL} } },
+};
+```
+
+### Download
+- [git branch](https://codeberg.org/wochap/dwl/src/branch/v0.5/modes)
+- [v0.5](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/modes/modes.patch)
+
+### Authors
+- [wochap](https://codeberg.org/wochap)