Auto-resolve vulnerabilities based on vulnerability management policy

...dels/concerns/security/vulnerability_management_policy.rb

ee/app/models/security/policy.rb

...p/models/security/vulnerability_management_policy_rule.rb

...p/services/security/ingestion/mark_as_resolved_service.rb

ee/app/services/vulnerabilities/auto_resolve_service.rb

...onfig/feature_flags/beta/auto_resolve_vulnerabilities.yml

ee/spec/factories/security/policies.rb

...els/security/vulnerability_management_policy_rule_spec.rb

...vices/security/ingestion/mark_as_resolved_service_spec.rb

...pec/services/vulnerabilities/auto_resolve_service_spec.rb