Test using Maestro CLI + emulator instead of Cloud (#4092)

Add Maestro local CI workflow:
- Remove previous Maestro Cloud.
- Use an emulator with Pixel 7 Pro - API 35.
- Allow to record several videos in the background to verify the run.
- Upload test results.
- Allow either dispatching a new flow, running the 'build apk' job or run with a PR after the 'Build APK' flow has succeeded.

.github/workflows/scripts/maestro/local-recording.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+#
+# Copyright 2024 New Vector Ltd.
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+# Please see LICENSE in the repository root for full details.
+#
+
+COUNT=0
+mkdir -p /data/local/tmp/recordings;
+FILENAME=/data/local/tmp/recordings/testRecording$COUNT.mp4
+while true
+ do
+   ((COUNT++))
+   FILENAME=/data/local/tmp/recordings/testRecording$COUNT.mp4
+   echo "\nRecording video file #$COUNT"
+   screenrecord --bugreport --bit-rate=16m --size 720x1280 $FILENAME
+ done