Relate software license policies to policy configurations

What does this MR do and why?

We are working on a new license_finding scan rule type for scan result policies (#385607 (closed)).

This MR:

• Adds a foreign key software_license_policies.scan_result_policy_id that associates software license policies with their defining scan result policy.
• Adds a new table scan_result_policies for storing license_finding scan result policy actions. The table will back a read model. For background, see #385607 (comment 1241310901).

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #385607 (closed)