DT-3099: Add configuration, validator, and sample tests for email deny patterns

[rushtong]

Addresses

Partially addresses https://broadworkbench.atlassian.net/browse/DT-3099

Summary

See https://github.com/broadinstitute/terra-helmfile/pull/6446 where we add configuration for global deny patterns.

This PR is restricted in that it provides a basic utility function that could be used for enforcement in other areas of the code. See linked ticket for those areas, but a potential list might be:

• TDRService.getApprovedUsersForDataset
• DacResource.addDacMember / addDacChair
• UserResource.addRoleToUser
• UserResource.createResearcher

---

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• Label PR with a Jira ticket number and include a link to the ticket
• Label PR with a security risk modifier [no, low, medium, high]
• PR describes scope of changes
• Get a minimum of one thumbs worth of review, preferably two if enough team members are available
• Get PO sign-off for all non-trivial UI or workflow changes
• Verify all tests go green
• Test this change deployed correctly and works on dev environment after deployment

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud