orf radiothek provider (#2968)

orf radiothek provider (#2968)

* orf radiothek: Initial Commit

* orf radiothek: fixed duplicate super call

* orf radiothek: moved some config value to advanced category

* orf radiothek: renamed classes to helper, removed catchup day conf entry set it to 30 days flat

* orf radiothek: set stage to beta and corrected version

* orf radiothek: some more cleanup

* orf radiothek: fixed some code smells

* orf radiothek: move stream quality type to advanced

* Update music_assistant/providers/orf_radiothek/__init__.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Co-authored-by: DButter <private@david-butter.com>
Co-authored-by: Marvin Schenkel <marvinschenkel@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>