Find a dart compatible oauth library

[MoralCode]

turns out https://pub.dev/packages/oauth2_client uses the flutter SDK not strictly dart.

this is breaking CI

[MoralCode]

another option includes simply reclassifying this as a Flutter library. which may or may not be a good choice

[MoralCode]

For the webhook usecase, tokens probably dont need to be persisted once the hook is set up as the data will simply arrive.

For other usecases we may need to find a way for the consumer of this library to be responsible for persistence

[MoralCode]

Having a library boundary between the code that persists tokens to secure storage and the code that uses those tokens seems to be a programming/design pattern I haven't seen before. More research may be needed on how best to do this

[MoralCode]

tbh im sorta leaning towards https://pub.dev/packages/oauth2 since it looks like its made by dart themselves

[MoralCode]

hmmm that library may not be great... dart-lang/oauth2#87

will experiment and see how it goes

[MoralCode]

this library has been found and imported, it just needs to be integrated