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

squashfs-root/usr/share/icons/Humanity-Dark/apps/24/nm-vpn-lock.svg

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   version="1.0"
+   width="24"
+   height="24"
+   id="svg4585">
+  <defs
+     id="defs4587" />
+  <rect
+     width="6"
+     height="5"
+     x="17"
+     y="15"
+     id="rect2822"
+     style="fill:#969696;fill-opacity:1;stroke:none" />
+  <path
+     d="m 18.529412,15 0,-0.941176 c 0,-2.000001 3,-2.000001 3,0 l 0,0.941176"
+     id="path3596"
+     style="fill:none;stroke:#969696;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
+</svg>