Should be able to record Front Camera Video as mirrored mode like SnapChat

There should be option to record front camera Video recording in mirrored mode like many big applications i.e. SnapChat, WhatsApp etc. As People are habitual to this mode.

Start by locating the sample's front-camera video recording entry point and checking how camera selection and preview or recording output are configured. Add an option for mirrored front-camera recording, then verify that the recorded video has the expected mirrored orientation without changing the non-mirrored mode.

Written by the indexing model from the issue text.