Add prio 3 asset for web app

assets/priority_3_24dp.svg

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   height="24px"
+   viewBox="0 0 24 24"
+   width="24px"
+   fill="#000000"
+   version="1.1"
+   id="svg1428"
+   sodipodi:docname="priority_3_24dp.svg"
+   inkscape:version="1.1.1 (3bf5ae0, 2021-09-20)"
+   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">
+  <path
+     id="path998"
+     style="fill:#999999;stroke-width:3.28887;stroke-linecap:round;stroke-linejoin:round"
+     d="M 16.136672,11.651756 A 4.2092752,4.2092752 0 0 1 11.927397,15.861031 4.2092752,4.2092752 0 0 1 7.7181216,11.651756 4.2092752,4.2092752 0 0 1 11.927397,7.4424805 4.2092752,4.2092752 0 0 1 16.136672,11.651756 Z" />
+  <defs
+     id="defs1432" />
+  <sodipodi:namedview
+     id="namedview1430"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:pageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     showgrid="false"
+     inkscape:zoom="20.440305"
+     inkscape:cx="19.789333"
+     inkscape:cy="13.062427"
+     inkscape:window-width="1863"
+     inkscape:window-height="1025"
+     inkscape:window-x="57"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg1428" />
+</svg>