Specify verification process for compliance

Why is this change being made?

This MR specifies the verification process for Compliance group. Most importantly this will also require adding to the triage bot to automate assigning to a second engineer.

This has been lifted from Threat Insights process

• automation: https://gitlab.com/gitlab-org/quality/triage-ops/-/blob/a25e0e30be02cd2182344d62c6bea70eedb8d776/triage/processor/assign_dev_for_verification.rb#L36
• process: https://about.gitlab.com/handbook/engineering/development/sec/govern/sp-ti-planning.html#verification

Once this has been merged I will add the triage bot

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