EPIC: Policy engine - backcountry registration policies

#### Description:
This EPIC is to capture work related to the 'policy engine', focusing on policies for backcountry registration. Prioritizing prior to implementing backcountry registration will help us better differentiate backcountry and DUP.

#### Relevant documentation:
- [Confluence page for Backcountry Registration Policies](https://apps.nrs.gov.bc.ca/int/confluence/display/BCPRS/Backcountry+Registrations+Policies)

#### Dependencies:
- Blocked by
- Blocking
- Related to

#### Notes:
- When this is started by Osprey [RS-2132](https://bcparksdigital.atlassian.net/jira/software/projects/RS/boards/7/backlog?selectedIssue=RS-2132) needs to be started by Reservation Services
-

Start with the linked Confluence page for Backcountry Registration Policies and review the dependency on Reservation Services RS-2132. This epic names no files, tests, or implementation entry point, so clarify the policy scope, acceptance criteria, and definition of done before selecting code to change.

Written by the indexing model from the issue text.