Birdseye enhancements (#9778)

* Center single camera view

* Implement scaling factor

* Add config for maximum number of cameras

* Add config for inactivity threshold

* update docs

frigate/config.py

@@ -528,6 +528,13 @@ class BirdseyeModeEnum(str, Enum):
         return list(cls)[index]
 
 
+class BirdseyeLayoutConfig(FrigateBaseModel):
+    scaling_factor: float = Field(
+        default=2.0, title="Birdseye Scaling Factor", ge=1.0, le=5.0
+    )
+    max_cameras: Optional[int] = Field(default=None, title="Max cameras")
+
+
 class BirdseyeConfig(FrigateBaseModel):
     enabled: bool = Field(default=True, title="Enable birdseye view.")
     restream: bool = Field(default=False, title="Restream birdseye via RTSP.")
@@ -539,9 +546,15 @@ class BirdseyeConfig(FrigateBaseModel):
         ge=1,
         le=31,
     )
+    inactivity_threshold: int = Field(
+        default=30, title="Birdseye Inactivity Threshold", gt=0
+    )
     mode: BirdseyeModeEnum = Field(
         default=BirdseyeModeEnum.objects, title="Tracking mode."
     )
+    layout: BirdseyeLayoutConfig = Field(
+        default_factory=BirdseyeLayoutConfig, title="Birdseye Layout Config"
+    )
 
 
 # uses BaseModel because some global attributes are not available at the camera level