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/borders/README.md

@@ -0,0 +1,36 @@
+### Description
+Adds 2 more borders to each side (top, bottom, left, right) of every window.
+
+
+
+<details>
+<summary>Preview</summary>
+<pre>
+With the following config:
+
+```c
+static const unsigned int borderpx         = 9;  /* border pixel of windows */
+static const unsigned int borderspx        = 3;  /* width of the border that start from outside the windows */
+static const unsigned int borderepx        = 3;  /* width of the border that start from inside the windows */
+```
+
+and `border_color_type` set to `BrdOriginal`:
+<img src="https://i.imgur.com/msead2K.png"/>
+
+and `border_color_type` set to `BrdStart`:
+<img src="https://i.imgur.com/ssgPG36.png"/>
+
+and `border_color_type` set to `BrdEnd`:
+<img src="https://i.imgur.com/i2Xtjy6.png"/>
+
+and `border_color_type` set to `BrdStartEnd`:
+<img src="https://i.imgur.com/fnkitdR.png"/>
+</pre>
+</details>
+
+### Download
+- [git branch](https://codeberg.org/wochap/dwl/src/branch/v0.5/borders)
+- [v0.5](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/borders/borders.patch)
+
+### Authors
+- [wochap](https://codeberg.org/wochap)