Add option to have cameras sorted inside the Birdseye stream (#5450)

* Add option to sort cameras inside Birdseye

* Make default order to be sorted alphabetically

* Add docs for sorting cameras

* Update index.md for cameras

* Remove irelevant comments

docs/docs/configuration/birdseye.md

@@ -33,3 +33,25 @@ cameras:
     birdseye:
       enabled: False
 ```
+
+### Sorting cameras in the Birdseye view
+
+It is possible to override the order of cameras that are being shown in the Birdseye view.
+The order needs to be set at the camera level.
+
+```yaml
+# Include all cameras by default in Birdseye view
+birdseye:
+  enabled: True
+  mode: continuous
+
+cameras:
+  front:
+    birdseye:
+      order: 1
+  back:
+    birdseye:
+      order: 2
+```
+
+*Note*: Cameras are sorted by default using their name to ensure a constant view inside Birdseye.

docs/docs/configuration/index.md

@@ -518,6 +518,12 @@ cameras:
       # Optional: password for login.
       password: admin
 
+    # Optional: Configuration for how to sort the cameras in the Birdseye view.
+    birdseye:
+      # Optional: Adjust sort order of cameras in the Birdseye view. Larger numbers come later (default: shown below)
+      # By default the cameras are sorted alphabetically.
+      order: 0
+
 # Optional
 ui:
   # Optional: Set the default live mode for cameras in the UI (default: shown below)