Autotracker: Basic zooming and moves with velocity estimation (#7713)

* don't zoom if camera doesn't support it

* basic zooming

* make zooming configurable

* zooming docs

* optional zooming in camera status

* Use absolute instead of relative zooming

* increase edge threshold

* zoom considering object area

* bugfixes

* catch onvif zooming errors

* relative zooming option for dahua/amcrest cams

* docs

* docs

* don't make small movements

* remove old logger statement

* fix small movements

* use enum in config for zooming

* fix formatting

* empty move queue first

* clear tracked object before waiting for stop

* use velocity estimation for movements

* docs updates

* add tests

* typos

* recalc every 50 moves

* adjust zoom based on estimate box if calibrated

* tweaks for fast objects and large movements

* use real time for calibration and add info logging

* docs updates

* remove area scale

* Add example video to docs

* zooming font header size the same as the others

* log an error if a ptz doesn't report a MoveStatus

* debug logging for onvif service capabilities

* ensure camera supports ONVIF MoveStatus

docs/docs/configuration/index.md

@@ -584,6 +584,18 @@ cameras:
       autotracking:
         # Optional: enable/disable object autotracking. (default: shown below)
         enabled: False
+        # Optional: calibrate the camera on startup (default: shown below)
+        # A calibration will move the PTZ in increments and measure the time it takes to move.
+        # The results are used to help estimate the position of tracked objects after a camera move.
+        # Frigate will update your config file automatically after a calibration with
+        # a "movement_weights" entry for the camera. You should then set calibrate_on_startup to False.
+        calibrate_on_startup: False
+        # Optional: the mode to use for zooming in/out on objects during autotracking. (default: shown below)
+        # Available options are: disabled, absolute, and relative
+        #   disabled - don't zoom in/out on autotracked objects, use pan/tilt only
+        #   absolute - use absolute zooming (supported by most PTZ capable cameras)
+        #   relative - use relative zooming (not supported on all PTZs, but makes concurrent pan/tilt/zoom movements)
+        zooming: disabled
         # Optional: list of objects to track from labelmap.txt (default: shown below)
         track:
           - person
@@ -591,9 +603,11 @@ cameras:
         required_zones:
           - zone_name
         # Required: Name of ONVIF preset in camera's firmware to return to when tracking is over. (default: shown below)
-        return_preset: preset_name
+        return_preset: home
         # Optional: Seconds to delay before returning to preset. (default: shown below)
         timeout: 10
+        # Optional: Values generated automatically by a camera calibration. Do not modify these manually. (default: shown below)
+        movement_weights: []
 
     # Optional: Configuration for how to sort the cameras in the Birdseye view.
     birdseye: