Add svgfill directly in IfcOpenShell git repo

src/svgfill/examples/rects.svg

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="210mm"
+   height="297mm"
+   viewBox="0 0 210 297"
+   version="1.1"
+   id="svg8"
+   inkscape:version="1.0.1 (3bc2e813f5, 2020-09-07)"
+   sodipodi:docname="rects.svg">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.35"
+     inkscape:cx="400"
+     inkscape:cy="560"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     inkscape:document-rotation="0"
+     showgrid="false"
+     inkscape:window-width="1820"
+     inkscape:window-height="1051"
+     inkscape:window-x="-9"
+     inkscape:window-y="-9"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <rect
+       style="opacity:0.99;fill:none;stroke-width:1;stroke:#000000;stroke-opacity:1"
+       id="rect842"
+       width="102.80952"
+       height="67.279762"
+       x="9.8273811"
+       y="43.089287" />
+    <rect
+       style="opacity:0.99;fill:none;stroke-width:1;stroke:#000000;stroke-opacity:1"
+       id="rect844"
+       width="120.19643"
+       height="92.226196"
+       x="83.910713"
+       y="86.178574" />
+    <rect
+       style="opacity:0.99;fill:none;stroke:#000000;stroke-width:1;stroke-opacity:1"
+       id="rect846"
+       width="33.261906"
+       height="213.93451"
+       x="130.0238"
+       y="8.3154764" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 27.970239,21.922619 186.72024,226.78571"
+       id="path848" />
+  </g>
+</svg>