Add Project Compliance Violations database table

What does this MR do and why?

1. This is the first step towards adding the feature for project compliance violations as part of the epic &12774 (closed)
2. This table would be used in the upcoming MRs.

References

Screenshots or screen recordings

Before	After

How to set up and validate locally

Run the following commands in Rails console to validate that the records being created.

p = Project.find(20)
n = p.namespace
a = AuditEvent.last
framework = ComplianceManagement::Framework.first
cr = framework.compliance_requirements.first
control = cr.compliance_requirements_controls.last

violation = ComplianceManagement::Projects::ComplianceViolation.create!({project_id: p.id, namespace_id: n.id, audit_event_id: a.id, compliance_requirements_control_id: control.id, status: :detected})

issue = p.issues.first

ComplianceManagement::Projects::ComplianceViolationIssue.create!({issue_id: issue.id, project_compliance_violation_id: violation.id, project_id: p.id})

violation.issues

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Closes #526131 (closed)