Add: bar-modes patch

Add modes_labels indicator to bar, which behaves like river-classic's
dam bar. This patch has to be applied after the bar and modes patch.

patches/bar-modes/README.md

@@ -0,0 +1,31 @@
+![dwl bar-modes patch example](./example.png)
+
+### Description
+
+Add a mode indicator to bar that tells which mode you are in, just like
+river-classic's [dam](https://codeberg.org/sewn/dam) bar.
+
+The string from `modes_labels` defined in `config.h` is used, while normal mode
+is ignored.
+
+Another usage is to serve as a hint for each modes keybindings:
+
+```c
+enum {
+    BROWSER,
+};
+const char *modes_lablels[] = {
+    "[f]irefox [b]rave [c]hromium [q]utebrowser",
+};
+```
+
+### Dependencies
+this patch depends on:
+- [bar](https://codeberg.org/dwl/dwl-patches/src/branch/main/patches/bar/) patch
+- [modes](https://codeberg.org/dwl/dwl-patches/src/branch/main/patches/modes/) patch
+
+### Download
+- [v0.8](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/bar-modes/bar-modes.patch)
+
+### Authors
+- [unixchad](https://codeberg.org/unixchad/)