Add out-of-the-box Frigate PTZ support.

src/utils/ptz.ts

@@ -0,0 +1,14 @@
+import { CameraManagerCameraCapabilities } from '../camera-manager/types';
+import { FrigateCardPTZConfig, PTZ_CONTROL_ACTIONS } from '../config/types';
+
+export const hasUsablePTZ = (
+  capabilities: CameraManagerCameraCapabilities | null,
+  config: FrigateCardPTZConfig,
+): boolean => {
+  for (const actionName of PTZ_CONTROL_ACTIONS) {
+    if ('actions_' + actionName in config) {
+      return true;
+    }
+  }
+  return !!capabilities?.ptz;
+};