feat: add various system and theme icons, configuration files, and support assets

squashfs-root/usr/share/icons/ubuntu-mono-dark/status/22/indicator-keyboard-Ka.svg

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="22" height="22" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <defs>
+  <mask id="m">
+   <rect width="22" height="22" style="fill:#fff"/>
+   <text x="4" y="15.5" style="fill:black;font-family:Ubuntu;font-size:12;font-weight:500">Ka</text>
+  </mask>
+ </defs>
+ <rect x="1" y="1" width="20" height="20" rx="2" mask="url(#m)" style="fill:#dfdbd2"/>
+</svg>