Track missing configs referenced by tracked files and other desktop settings

Add kitty themes and mutt includes loaded by tracked configs, xmonad's stack
build files, new systemd units and overrides, plus picom, pipewire, portal,
modprobed-db, btop, vifm, qt5ct/qt6ct, calcurse, mpDris2 and thefuck configs.

.config/mpDris2/mpDris2.conf

@@ -0,0 +1,18 @@
+# Copy this to /etc/mpDris2.conf or ~/.config/mpDris2/mpDris2.conf
+# Default values are shown here, commented out.
+
+[Connection]
+# You can also export $MPD_HOST and/or $MPD_PORT to change the server.
+#host = localhost
+#port = 6600
+#password =
+
+[Library]
+#music_dir =
+#cover_regex = ^(album|cover|\.?folder|front).*\.(gif|jpeg|jpg|png)$
+
+[Bling]
+#mmkeys = True
+notify = False
+# Urgency of the notification: 0 for low, 1 for medium and 2 for high.
+#notify_urgency = 0