Add evcc widget (#1473)

* added all evcc related files

* changed units

* bugfix changed first value to pvPower insted of homePower

* deleted proxy.js

* delted battary label and german translation

* Code style changes to evcc widget

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Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src/widgets/components.js

@@ -17,6 +17,7 @@ const components = {
   docker: dynamic(() => import("./docker/component")),
   kubernetes: dynamic(() => import("./kubernetes/component")),
   emby: dynamic(() => import("./emby/component")),
+  evcc: dynamic(() => import("./evcc/component")),
   fileflows: dynamic(() => import("./fileflows/component")),
   flood: dynamic(() => import("./flood/component")),
   freshrss: dynamic(() => import("./freshrss/component")),