Added an icon for VertexLight2D.

modules/vertex_lights_2d/icons/icon_vertex_light_2d.svg

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   height="16"
+   viewBox="0 0 16 16"
+   width="16"
+   version="1.1"
+   id="svg1"
+   sodipodi:docname="icon_vertex_light_2d.svg"
+   inkscape:version="1.3.2 (091e20ef0f, 2023-11-25, 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="defs1" />
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:zoom="47.25"
+     inkscape:cx="7.005291"
+     inkscape:cy="8.5714286"
+     inkscape:window-width="1920"
+     inkscape:window-height="1052"
+     inkscape:window-x="1920"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg1" />
+  <path
+     d="m8 1a5 5 0 0 0 -5 5 5 5 0 0 0 3 4.5762v2.4238h4v-2.4199a5 5 0 0 0 3-4.5801 5 5 0 0 0 -5-5zm0 2a3 3 0 0 1 3 3 3 3 0 0 1 -3 3 3 3 0 0 1 -3-3 3 3 0 0 1 3-3zm-1 11v1h2v-1z"
+     fill="#a5b7f3"
+     fill-opacity=".98824"
+     id="path1" />
+  <g
+     fill="#ffd684"
+     id="g3"
+     transform="rotate(-70.720541,7.7659337,5.574093)">
+    <ellipse
+       cx="3.7237"
+       cy="3.0267999"
+       rx="2.0114"
+       ry="1.9956"
+       id="ellipse1" />
+    <ellipse
+       cx="11.717"
+       cy="6.1733999"
+       rx="2.0114"
+       ry="1.9956"
+       id="ellipse2" />
+    <ellipse
+       cx="6.5219002"
+       cy="12.477"
+       rx="2.0114"
+       ry="1.9956"
+       id="ellipse3" />
+  </g>
+</svg>