Force refresh token

[rkcreation]

All Submissions:

• Have you followed the plugin Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Add callable Wordpress action to force a token refresh:

do_action( 'openid-connect-generic-refresh-token' );

How to test the changes in this Pull Request:

1. Change user realm_access outside of wordpress
2. Check Wordpress what access_token realm_access contains (outdated informations)
3. Use the new action do_action( 'openid-connect-generic-refresh-token' );
4. Check Wordpress what access_token realm_access contains (refreshed informations)

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?

Changelog entry

Enter a summary of all changes on this Pull Request. This will appear in the changelog if accepted.

This PR contains also #338 (required to work). So, for both:

• Add new wordpress actions: openid-connect-generic-refresh-token and openid-connect-generic-refresh-user-claim
• Rewrite ensure_tokens_still_fresh to a protected method that handles bool param to force the refresh, no matter if time is expired
• After the token was refreshed, ensure that user claim is updated (by calling new openid-connect-generic-refresh-user-claim action)

[josepedrocorreia]

Hi there,
We're using this plugin on our website and have recently been facing issues that I have a feeling might be related to what this PR tries to fix. Are there plans for this to be reviewed and released soon?
Cheers,
Pedro