The authz library returns a 404 if the authorization fails. If the
context is cancelled, then a 404 message is inaccurate.
Add a unit test to ensure context cancelled errors are raised
properly
feat: Add initial AuthzQuerier implementation
- Adds package database/dbauthz that adds a database.Store implementation where each method goes through AuthZ checks
- Implements all database.Store methods on AuthzQuerier
- Updates and fixes unit tests where required
- Updates coderd initialization to use AuthzQuerier if codersdk.ExperimentAuthzQuerier is enabled
