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

squashfs-root/usr/share/icons/Humanity/apps/24/xchat-panel.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg id="svg2816" width="24" height="24" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <g id="layer1" transform="translate(0,8)">
+  <path id="path2830" d="m16.728 1.6339 2.2768-2.2768-2.8571-2.8571-4.5536 4.5536-0.17857-1e-7 -4.5536-4.5536-2.8571 2.8571 2.2768 2.2768m0 4.7321-2.2768 2.2768 2.8571 2.8571 4.5536-4.5536h0.17857l4.5536 4.5536 2.8571-2.8571-2.2768-2.2768" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.25;stroke:#606060"/>
+  <path id="path3607" d="m5.5 3.5h-2v2h2" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:1px;stroke:#606060"/>
+  <path id="path3611" d="m10.5 5.5v-2h-2v-1.5 3.5" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:1px;stroke:#606060"/>
+  <path id="path3613" d="m15.5 5.5v-2h-2v2h0.75" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:1px;stroke:#606060"/>
+  <path id="path3615" d="m21 3.5h-2.5 1v-1.5 3.5h1.5" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:1px;stroke:#606060"/>
+ </g>
+</svg>