chore: add icon assets (SVG + PNG fallback)

assets/agor-icon-no-bkg.svg

@@ -0,0 +1,57 @@
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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
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+   id="svg1"
+   width="1024"
+   height="1024"
+   viewBox="0 0 1024 1024"
+   sodipodi:docname="agor-icon-no-bkg.svg"
+   inkscape:version="1.4 (e7c3feb100, 2024-10-09)"
+   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="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#505050"
+     inkscape:zoom="0.67718428"
+     inkscape:cx="779.69914"
+     inkscape:cy="335.94991"
+     inkscape:window-width="5120"
+     inkscape:window-height="1350"
+     inkscape:window-x="0"
+     inkscape:window-y="53"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g1" />
+  <g
+     inkscape:groupmode="layer"
+     inkscape:label="Image"
+     id="g1">
+    <g
+       id="g2">
+      <path
+         style="fill:#000000;fill-opacity:1;stroke-width:164"
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+         id="path2" />
+      <path
+         id="path8"
+         style="fill:#cd9c34;fill-opacity:1;stroke-width:339.54"
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+</svg>