assets (img and css) added to static, added normalize.css and resolved VSCode warnings for it, connected normalize.css to app.html

frontend/static/img/vector/game/unturned.svg

@@ -0,0 +1,72 @@
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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="40mm"
+   height="40mm"
+   viewBox="0 0 40 40"
+   version="1.1"
+   id="svg1"
+   xml:space="preserve"
+   sodipodi:docname="unturned.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"><sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="mm"
+     showgrid="true"
+     inkscape:zoom="2.8284271"
+     inkscape:cx="22.45064"
+     inkscape:cy="80.079843"
+     inkscape:window-width="1920"
+     inkscape:window-height="997"
+     inkscape:window-x="0"
+     inkscape:window-y="45"
+     inkscape:window-maximized="1"
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+       id="grid1"
+       units="px"
+       originx="0"
+       originy="0"
+       spacingx="0.26458333"
+       spacingy="0.26458333"
+       empcolor="#0099e5"
+       empopacity="0.30196078"
+       color="#0099e5"
+       opacity="0.14901961"
+       empspacing="5"
+       dotted="false"
+       gridanglex="30"
+       gridanglez="30"
+       visible="true" /></sodipodi:namedview><defs
+     id="defs1" /><g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"><rect
+       style="fill:#000000;stroke-width:0.04689923;stroke-dasharray:none;stroke:#000000;stroke-opacity:1"
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+       width="2.3812501"
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+       id="rect2-3-2"
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