Ability to set Dialog for TrackSelectionDialogBuilder

[REQUIRED] Use case description

Currently TrackSelectionDialogBuilder uses either androidx.appcompat.app.AlertDialog$Builder or AlertDialog.Builder in the build(). My app is using Material3, but other people might be using Material2 or even there own theme.
My current issue is that I can't theme the Dialog to Material3 even when using the setTheme().

Proposed solution

I'm proposing to either add a new constructor which could take in an object extending AlertDialog.Builder or adding a new setter to do so.
There is even a solution of making TrackSelectionDialogBuilder an abstract class and let the users implement their own which would shift the issue of displaying the right dialog/theming onto the user.

Note: I could propose a PR for the selected solution