Add TUser type param to useAuth0 hook

[Jameskmonger]

Description

Adds generic type parameter to useAuth0 to specify type of user (see #228 for feature request)

const { user } = useAuth0<{ name: string; }>();

user.name // string

This parameter is optional and will use the already existing User type if not provided

References

Closes #228
Closes #201

Testing

I tried to unit test this but I'm not sure of the correct way to pass type params to a hook through renderHook

You can see this in-use in the Create React App example

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not master

[adamjmcgrath]

lgtm

[adamjmcgrath]

Suggested change

	} = useAuth0<{ name: string }>();
	} = useAuth0();

The README examples are plain js

[adamjmcgrath]

Thanks @Jameskmonger!

[Jameskmonger]

Thanks for merging @adamjmcgrath 😄