Authentication: AniList authentication integration

[wax911]

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Planning Information

As part of the authentication process, the android-auth module is to implement the authentication flow covering the user interface and interaction use-case. The user interface should provide two authentication methods:

Anonymous

Anonymous state is when the application does not provide the anilist platform with any authorisation code

Authenticated

Authenticated state is when the application makes use of an authorisation code to make requests on the behalf of the user, this intern unlocks additional features which cannot be used/accessed without being authenticated

Solution Information

Use androidx.browser:browser to implement custom tabs which should simplify handling intent callbacks compared to using simple browser intents.

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