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

squashfs-root/usr/share/icons/Adwaita/symbolic/status/network-cellular-disabled-rtl-symbolic.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg">
+    <path d="m 1.53125 0.46875 l -1.0625 1.0625 l 14 14 l 0.53125 -0.53125 c 0.554688 0 1 -0.445312 1 -1 v -3 c 0 -0.554688 -0.445312 -1 -1 -1 h -1 c -0.554688 0 -1 0.445312 -1 1 v 0.9375 l -1 -1 v -2.9375 c 0 -0.554688 -0.445312 -1 -1 -1 h -1 c -0.535156 0 -0.964844 0.414062 -0.996094 0.941406 l -1.003906 -1.003906 v -1.9375 c 0 -0.554688 -0.445312 -1 -1 -1 h -1 c -0.261719 0 -0.496094 0.101562 -0.671875 0.261719 l -1.328125 -1.324219 v -0.9375 c 0 -0.554688 -0.445312 -1 -1 -1 h -0.9375 z m -0.53125 3.59375 v 9.9375 c 0 0.554688 0.445312 1 1 1 h 1 c 0.554688 0 1 -0.445312 1 -1 v -6.9375 z m 4 4 v 5.9375 c 0 0.554688 0.445312 1 1 1 h 1 c 0.554688 0 1 -0.445312 1 -1 v -2.9375 z m 4 4 v 1.9375 c 0 0.554688 0.445312 1 1 1 h 1 c 0.261719 0 0.496094 -0.101562 0.671875 -0.261719 z m 0 0" fill="#2e3436"/>
+</svg>