Add code and style for basic map display

sprites/leaf_tree.svg

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="65.121857mm"
+   height="44.999847mm"
+   viewBox="0 0 65.121857 44.999847"
+   version="1.1"
+   id="svg5"
+   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">
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#505050"
+     inkscape:document-units="mm"
+     showgrid="false" />
+  <defs
+     id="defs2" />
+  <g
+     inkscape:label="Ebene 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-107.4198,-157.75109)">
+    <path
+       id="path280"
+       style="fill:#000000;stroke-width:1.42666"
+       d="m 132.41982,157.75109 a 24.999975,29.99997 0 0 0 -25.00002,29.99972 24.999975,29.99997 0 0 0 3.36414,15.00012 h 2.9409 a 22.499978,26.999973 0 0 1 -3.80493,-15.00012 22.499978,26.999973 0 0 1 22.49991,-26.9999 22.499978,26.999973 0 0 1 22.49992,26.9999 22.499978,26.999973 0 0 1 -3.80493,15.00012 h 2.95589 a 24.999975,29.99997 0 0 0 3.34915,-15.00012 24.999975,29.99997 0 0 0 -25.00003,-29.99972 z" />
+    <rect
+       style="fill:#000000;fill-opacity:1;stroke-width:0.568493"
+       id="rect1078"
+       width="20"
+       height="2.5"
+       x="152.54166"
+       y="200.25093" />
+  </g>
+</svg>