OIDC: Token refresher class (#3769)
* add tokenRefresher class
* export generateScope
* export oidc from matrix
* mark experimental
* Apply suggestions from code review
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* remove some vars in test
* make TokenRefresher un-abstract, comments and improvements
* remove invalid jsdoc
* Update src/oidc/tokenRefresher.ts
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Code review improvements
* document TokenRefreshFunction
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Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
