docs: add awatcher to watchers list (#122)

Author: 2e3s

src/watchers.rst

@@ -56,6 +56,7 @@ Other watchers to collect all kinds of data.
 - :gh:`Alwinator/aw-watcher-utilization` - Monitors CPU, RAM, disk, network, and sensor usage, by :gh-user:`Alwinator`
 - :gh:`abdnh/aw-watcher-anki` - An add-on for Anki that tracks time spent reviewing cards.
 - :gh:`Edwardsoen/aw-watcher-steam` - A Watcher to monitor current game being played.
+- :gh:`2e3s/awatcher` - A compiled watcher for X11 and Wayland to replace the original active window and AFK watchers, with workarounds for KDE and Gnome on Wayland.
 
 Custom visualizations
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