Split out service entities (#21076)

* Hide notify entiites from generated dashboard

* Split out service entities on device info page

* Update src/panels/lovelace/common/generate-lovelace-config.ts

* Split service -> notify/assist

src/common/const.ts

@@ -31,6 +31,7 @@ import {
   mdiFormatListBulleted,
   mdiFormatListCheckbox,
   mdiFormTextbox,
+  mdiForumOutline,
   mdiGauge,
   mdiGoogleAssistant,
   mdiGoogleCirclesCommunities,
@@ -98,7 +99,7 @@ export const FIXED_DOMAIN_ICONS = {
   calendar: mdiCalendar,
   climate: mdiThermostat,
   configurator: mdiCog,
-  conversation: mdiMicrophoneMessage,
+  conversation: mdiForumOutline,
   counter: mdiCounter,
   date: mdiCalendar,
   datetime: mdiCalendarClock,
@@ -235,6 +236,8 @@ export const SENSOR_ENTITIES = [
   "weather",
 ];
 
+export const ASSIST_ENTITIES = ["conversation", "stt", "tts"];
+
 /** Domains that render an input element instead of a text value when displayed in a row.
  *  Those rows should then not show a cursor pointer when hovered (which would normally
  *  be the default) unless the element itself enforces it (e.g. a button). Also those elements