add cache and rename some files

opendeck/plugins/com.elgato.discord.sdPlugin/images/overlays/headphonesBig.svg

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   viewBox="0 0 144 144"
+   version="1.1"
+   id="svg3"
+   sodipodi:docname="headphonesBig.svg"
+   inkscape:version="1.1.2 (b8e25be833, 2022-02-05)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs7" />
+  <sodipodi:namedview
+     id="namedview5"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:pageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     showgrid="false"
+     inkscape:zoom="0.5"
+     inkscape:cx="71"
+     inkscape:cy="72"
+     inkscape:window-width="2560"
+     inkscape:window-height="1377"
+     inkscape:window-x="-8"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg3" />
+  <path
+     id="headphones"
+     fill="#ffffff"
+     fill-rule="nonzero"
+     d="m 127.4205,118.1835 c 0,6.798 -5.5185,12.3165 -12.315,12.3165 h -6.1575 c -6.798,0 -12.3165,-5.5185 -12.3165,-12.3165 V 99.711 c 0,-6.798 5.5185,-12.3165 12.3165,-12.3165 h 6.1575 v -18.474 c 0,-23.79 -19.3155,-43.104 -43.1055,-43.104 -23.79,0 -43.1055,19.314 -43.1055,43.104 v 18.474 h 6.1575 c 6.798,0 12.3165,5.5185 12.3165,12.3165 v 18.4725 c 0,6.798 -5.5185,12.3165 -12.3165,12.3165 h -6.1575 c -6.7965,0 -12.315,-5.5185 -12.315,-12.3165 V 68.9205 C 16.5795,38.334 41.412,13.5 72,13.5 c 30.588,0 55.4205,24.834 55.4205,55.4205 z"
+     style="stroke-width:1.49999" />
+</svg>