SRE-2902 UUIDv7 version validation rule support

[Paul De Audney (pdeaudney)]

Summary

Add a UUIDv7 validation rule, to be used in apischema proto definitions.

Problem description

We currently only support validation of a UUID (any version) & UUID v4.
In some situations ensuring a v7 version would be good for performance reasons.

Pros/cons of approach implemented

Checklist

• Is this PR a reasonable size?

• List deployment sequence with all relevant PRs.
  • ...

• For breaking changes: I have confirmed that other repos are not affected, or I have planned a deployment sequence to address any impact.

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