Add validation for docker tag names in job.image.name and job.service[].name.

What does this MR do?

This merge request implements docker docker image name validation through a regex: https://regex101.com/r/HaqLc3/3 - you can check the regex match test suite at https://regex101.com/r/HaqLc3/3/tests

The regex is based on the docker image tag spec as available here

This MR fixes one part of #220915 on the server side

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines As this MR introduces a (slightly complicated) regex, this would need some eyes from your experts on that part.
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

Risks:

• This is a slightly complicated regex, but with a limited amount of backtracking as far as I can see.
• (some) additional performance is required for validating ci config files.

Additional tests to check the new validator can be added.

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

N/A