Refactor camera feed handling to support dynamic camera IDs and improve context management

src/app/config/cameraConfig.ts

@@ -0,0 +1,12 @@
+// Camera configuration - add more cameras here as needed
+export const CAMERA_IDS = ["A", "B", "C"] as const;
+
+export type CameraID = (typeof CAMERA_IDS)[number];
+
+export const DEFAULT_REGIONS = [
+  { name: "Bay 1", brushColour: "#ff0000" },
+  { name: "Bay 2", brushColour: "#00ff00" },
+  { name: "Bay 3", brushColour: "#0400ff" },
+  { name: "Bay 4", brushColour: "#ffff00" },
+  { name: "Bay 5", brushColour: "#fc35db" },
+];