refactor: Significantly refactor how conditions work internally (#1886)

- Much improved API cleanliness and testability to allow further
extensibility in future
 - Simplified code in `live` view

This technically contains a small change in how overrides work in the
`live` view. Since that change is _closer_ to the documentation, and
since this is likely to be rarely used, this is not considered a
breaking change. Previously, overrides for a given live camera would
always render _as if_ that camera was selected, vs was actually
selected. Now, overrides will only apply in the live view when the
camera is _actually_ selected. If this is an issue for you in practice,
lets discuss.

src/card-controller/triggers-manager.ts

@@ -1,4 +1,3 @@
-import isEqual from 'lodash-es/isEqual';
 import orderBy from 'lodash-es/orderBy';
 import throttle from 'lodash-es/throttle';
 import { CameraEvent } from '../camera-manager/types';
@@ -132,13 +131,9 @@ export class TriggersManager {
     const triggeredCameraIDs = new Set(this._triggeredCameras.keys());
     const triggeredState = triggeredCameraIDs.size ? triggeredCameraIDs : undefined;
 
-    if (
-      !isEqual(triggeredState, this._api.getConditionsManager().getState().triggered)
-    ) {
-      this._api.getConditionsManager().setState({
-        triggered: triggeredState,
-      });
-    }
+    this._api.getConditionStateManager().setState({
+      triggered: triggeredState,
+    });
   }
 
   protected async _untriggerAction(cameraID: string): Promise<void> {