Implement UI for managing multiple models (#24023)

* Implement hardware detection and UI management

* Cleanup Frigate+ detection

* Don't count model as changed

* Fixes for audio map error

* Add descriptions

* Enforce that all model must exist

* Fix hardware picking

* Docs fixes

* WebUI cleanup

* Cleanup handling of scenes

* UI refinement

* Cleanup recommended UI

* test fixews

web/public/locales/en/config/cameras.json

@@ -100,7 +100,7 @@
     },
     "scene": {
       "label": "Detect scene",
-      "description": "The environment this camera looks at, used to pick which of the configured models runs on it. Defaults to the model with a scene of 'all'."
+      "description": "The environment this camera looks at, used to pick which of the configured models runs on it. Cameras left on 'all' run the model configured with a scene of 'all'."
     },
     "fps": {
       "label": "Detect FPS",

web/public/locales/en/config/global.json

@@ -468,7 +468,7 @@
     },
     "scene": {
       "label": "Detect scene",
-      "description": "The environment this camera looks at, used to pick which of the configured models runs on it. Defaults to the model with a scene of 'all'."
+      "description": "The environment this camera looks at, used to pick which of the configured models runs on it. Cameras left on 'all' run the model configured with a scene of 'all'."
     },
     "fps": {
       "label": "Detect FPS",

web/public/locales/en/config/validation.json

@@ -31,5 +31,8 @@
   },
   "detect": {
     "dimensionMustBeEven": "Must be an even number."
+  },
+  "models": {
+    "defaultRequired": "One model must use a scene of 'All cameras'. Without it, any camera that does not choose a scene has no model to fall back to."
   }
 }