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

squashfs-root/usr/share/icons/Humanity-Dark/status/22/system-file-manager-panel.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg id="svg2896" width="22" height="22" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <g id="layer1" transform="translate(0 7)">
+  <g id="layer1-3" transform="translate(-2 -5)">
+   <path id="rect2196" d="m19.5 4.51v-2.01h-7.0315l-1.5265-0.978h-6.442v12.988c-0.00224 0.88609 0.36635 2.1366 2.336 1.9895" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:.979;stroke:#969696"/>
+   <path id="rect3086" d="m14.013 16.5h-7.7564l-0.95643-0.3c1.8592 0.20657 1.2-8.0333 1.2-11.7h15v7.9499c0.07747 2.86 0.32676 4.1627-4.008 4.0501" style="fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:.99984;stroke:#969696"/>
+   <path id="path3594" d="m10.313 15.5h-3.813c1.6268-1.6057 1-7 1-10h13v10h-3.308" style="fill:none;opacity:.4;stroke-linecap:round;stroke-linejoin:round;stroke-width:.99984;stroke:#969696"/>
+   <path id="path3970-2" d="m11.5 7.476 6.2062 4.2448-2.222 0.66927s1.8589 3.55 1.8589 3.55c0.62413 1.5725-1.76 2.3135-2.2281 1.1341 0 0-1.833-3.5006-1.833-3.5006l-1.7634 1.4202-0.01852-7.5179z" style="fill:none;stroke-linejoin:round;stroke:#969696"/>
+  </g>
+ </g>
+</svg>