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

---------

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

src/widgets/evcc/component.jsx

@@ -0,0 +1,36 @@
+import { useTranslation } from "next-i18next";
+
+import Container from "components/services/widget/container";
+import Block from "components/services/widget/block";
+import useWidgetAPI from "utils/proxy/use-widget-api";
+
+export default function Component({ service }) {
+  const { t } = useTranslation();
+
+  const { widget } = service;
+  const { data: stateData, error: stateError } = useWidgetAPI(widget, "state");
+
+  if (stateError) {
+    return <Container service={service} error={stateError} />;
+  }
+
+  if (!stateData) {
+    return (
+      <Container service={service}>,
+        <Block label="evcc.pv_power" />
+        <Block label="evcc.grid_power" />
+        <Block label="evcc.home_power" />
+        <Block label="evcc.charge_power"/>
+      </Container>
+    );
+  }
+
+  return (
+    <Container service={service}>
+      <Block label="evcc.pv_power" value={`${t("common.number", { value: stateData.result.pvPower })} ${t("evcc.watt_hour")}`} />
+      <Block label="evcc.grid_power" value={`${t("common.number", { value: stateData.result.gridPower })} ${t("evcc.watt_hour")}`} />
+      <Block label="evcc.home_power" value={`${t("common.number", { value: stateData.result.homePower })} ${t("evcc.watt_hour")}`} />
+      <Block label="evcc.charge_power" value={`${t("common.number", { value: stateData.result.loadpoints[0].chargePower })} ${t("evcc.watt_hour")}`} />
+    </Container>
+  );
+}