Migrate from Anko to Room

[stevenzeck]

For the next release where we have a breaking change, we need to make the calls made to the database in https://github.com/stevenzeck/r2-lcp-kotlin/blob/room/r2-lcp/src/main/java/org/readium/r2/lcp/license/License.kt to be asynchronous.

[stevenzeck]

Leaving in draft until I figure out why the dialog for inputting the passphrase isn't showing much.

[mickael-menu]

Nice, thanks!

I created a dedicated 3.0.0 epic to list the changes to be made: https://github.com/readium/r2-testapp-kotlin/issues/454

[stevenzeck]

Do you want to be rid of needing a database for this by 3.0? If not, then this is fine, but we should deprecate the relevant functions/vals sooner than later.

[mickael-menu]

Do you want to be rid of needing a database for this by 3.0? If not, then this is fine, but we should deprecate the relevant functions/vals sooner than later.

Not necessarily as it's convenient to have a default implementation. The idea is to give the control back to the apps if they want it though, regarding passphrase persistence.

[stevenzeck]

I also changed how the Bluetooth adapter's name is retrieved, as BluetoothAdapter.getDefaultAdapter() is deprecated with API 31.

There is plenty of other refactoring that can be done, especially with the checks to exists and isDeviceRegistered, but another day.

[mickael-menu]

Great improvement, thank you!