Settings: Add a setting to enable the rotation lock by default

This setting would make the VideoPlayer to launch the playback directly in landscape, therefore locking the rotation.

Based on user-feedback: https://code.videolan.org/videolan/ios-support/-/issues/54068

changed milestone to %4.0.0

added Settings user feedback labels

assigned to @diogo.simao-marques

mentioned in merge request !1420 (merged)

closed with merge request !1420 (merged)

closed with commit 5a837546