Support for regex pattern in DefaultJWTClaimMapper permission parser

[adamko147]

What changed?

Added support for parsing permissions from JWT claim using regular expression

Why?

Default JWT Claim Mapper expects permission in form namespace:role. If it's not possible to configure JWT issuer to follow namespace:role permissionsPattern can be set to regular expression with named groups to parse permission. More details in issue gh-7560

How did you test it?

• Unit tests
• Local tests
• Self hosted environment (ongoing)

Potential risks

This change is only activated if new configuration is provided

Documentation

WIP

Is hotfix candidate?

No

[CLAassistant]

All committers have signed the CLA.

[adamko147]

LGTM. Could you also open a PR to document this in our documentation repo: https://github.com/temporalio/documentation/blob/main/docs/production-deployment/self-hosted-guide/security.mdx#default-jwt-claimmapper?

@bergundy, will do that! Thanks, appreciate the support!