Setup Maestro and add first tests.

Also configure CI

.maestro/tests/roomList/timeline/timeline.yaml

@@ -0,0 +1,14 @@
+appId: ${APP_ID}
+---
+# This is the name of one room
+# TODO Create a room on a new account
+- tapOn: ${ROOM_NAME}
+- takeScreenshot: build/maestro/500-Timeline
+- tapOn: "Message…"
+- inputText: "Hello world!"
+- tapOn: "Toggle full screen mode"
+- tapOn: "Toggle full screen mode"
+- tapOn: "Send"
+- hideKeyboard
+- back
+- runFlow: ../../assertions/assertHomeDisplayed.yaml