fix: Improve 2-way audio detection (#2293)

- For Frigate cameras, you must be running at least [integration
v5.12.0](https://github.com/blakeblackshear/frigate-hass-integration/releases/tag/v5.12.0).
 - Closes: #2191 

Includes a significant refactor of cameras, and the introduction of a
`2-way-audio` capability that is dynamically fetched from `go2rtc`. One
gotcha is if you previously had a substream with 2-way audio, you may
need to modify

```yaml
 - camera_entity: camera.foo
    capabilities:
      disable_except:
        - substream
```

... to ...

```yaml
 - camera_entity: camera.foo
    capabilities:
      disable_except:
        - substream
        - 2-way-audio
```

src/camera-manager/engine.ts

@@ -6,8 +6,6 @@ import { ViewItemCapabilities } from '../view/types';
 import { Camera } from './camera';
 import { CameraManagerReadOnlyConfigStore } from './store';
 import {
-  CameraEndpoints,
-  CameraEndpointsContext,
   CameraManagerCameraMetadata,
   CameraQuery,
   Engine,
@@ -122,9 +120,4 @@ export interface CameraManagerEngine {
   ): CameraManagerCameraMetadata;
 
   getMediaCapabilities(media: ViewMedia): ViewItemCapabilities | null;
-
-  getCameraEndpoints(
-    cameraConfig: CameraConfig,
-    context?: CameraEndpointsContext,
-  ): CameraEndpoints | null;
 }