Add guidelines for all categories

public/icons/lightbulb.svg

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   height="48"
+   width="48"
+   version="1.1"
+   id="svg4"
+   sodipodi:docname="lightbulb.svg"
+   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04, custom)"
+   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="defs8" />
+  <sodipodi:namedview
+     id="namedview6"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     showgrid="false"
+     inkscape:zoom="13.125"
+     inkscape:cx="24"
+     inkscape:cy="24"
+     inkscape:window-width="1920"
+     inkscape:window-height="983"
+     inkscape:window-x="482"
+     inkscape:window-y="768"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg4" />
+  <path
+     d="M24 44Q22.3 44 21.125 42.825Q19.95 41.65 19.95 39.95H28.05Q28.05 41.65 26.875 42.825Q25.7 44 24 44ZM15.9 36.85V33.85H32.1V36.85ZM16.15 30.8Q12.85 28.65 10.925 25.425Q9 22.2 9 18.15Q9 12.05 13.45 7.6Q17.9 3.15 24 3.15Q30.1 3.15 34.55 7.6Q39 12.05 39 18.15Q39 22.2 37.1 25.425Q35.2 28.65 31.85 30.8Z"
+     id="path2"
+     style="fill:#ffffff" />
+</svg>