[web-client] simple theme: move SVGs to client/simple/src and deploy to static by plg_svg2svg

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

client/simple/tools/jinja_svg_catalog.html.edge

@@ -13,7 +13,7 @@ template. This file from:
 {%-
 set catalog = {
 @each((svg, name) in svg_catalog)
-    "{{{name}}}" : """{{{svg}}}""",
+    '{{{name}}}' : '{{{svg}}}',
 @end
 }
 -%}