Add OpenDTU Widget (#2069)

* add opendtu widget

* optimize widget

* Revert de translation files

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

public/locales/en/common.json

@@ -529,6 +529,12 @@
         "streams_active": "Active Streams",
         "streams_xepg": "XEPG Channels"
     },
+    "opendtu": {
+        "yieldDay": "Today",
+        "absolutePower": "Power",
+        "relativePower": "Power %",
+        "limit": "Limit"
+    },
     "opnsense": {
         "cpu": "CPU Load",
         "memory": "Active Memory",