in 1.1.0, can set record bitrate

Please follow the following instructions before filing a bug:

1. Github issues under this project are only for **sample**-related issues. If you have modified the sample code in any way, then this is probably not the appropriate place to report a bug.
1. If you are trying to report a bug related to the **CameraX library** then you can do so at the Android Issue Tracker: https://issuetracker.google.com/components/618491.
1. Include the specific sample where you found the issue, in addition to device model and specific Android build number -- which can be found under Settings > About phone.
1. Include error logs from logcat, if there are any.
1. If you can, also attach a [bug report](https://developer.android.com/studio/debug/bug-report)-- but please keep in mind that personal information can sometimes be found in those, so double check before attaching.

La issue non identifica alcun sample, file, test, dispositivo o comportamento errato. Inizia individuando nel repository camera-samples il sample interessato dalla registrazione e chiarisci il comportamento richiesto del bitrate prima di definire il lavoro di implementazione e i criteri di accettazione.

Scritto dal modello di indicizzazione a partire dal testo della issue.