Added some themes, but mostly updated power monitor to better wrangle the sensors and udpate_intervals to save DB space

themes/mushroom/mushroom-shadow.yaml

@@ -0,0 +1,11 @@
+# DO NOT EDIT THIS FILE.
+# This file will be reset with updates.
+# If you want to customize it, copy the content in another folder and file and change the name.
+# https://www.home-assistant.io/integrations/frontend/#defining-themes
+Mushroom Shadow:
+  # Home Assistant override
+  ha-card-box-shadow: 0px 2px 4px 0px rgba(0,0,0,0.16)
+  ha-card-border-width: 0
+  modes:
+    light: {}
+    dark: {}