Update Angular to 14

[frederikprijck]

Description

Updates Angular to 14. Also updates typedoc because of a conflicting peerDependency on typescript.
This also migrates to ESLint, as TSLint has been removed in the process of upgrading to 14.

References

Closes #255

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

[mcarey1590]

Is there an ETA on when this version will be released?

[frederikprijck]

I had a conversation with the Angular team and concluded the following:

When you compile an SDK with Angular 14 and compilationMode set to partial, the SDK will only work with Angular 14+.
However, as we still need to support Angular 12 and 13, it appears to be that we have two options:

• Create a separate version for every major version of Angular
• Compile using the lowest supported Angular version, currently being 12.

Given we have no specific features from angular apart from a service and an interceptor, I believe we should be fine to stick with Angular 12, that would have full support for Angular 12, 13, 14 and 15.

However, that would mean we can not merge this PR yet, but can only do so once Angular has dropped support for Angular 12 and 13. Maintaining multiple versions comes with a cost that is not worth it for our SDK.