As system, I should be able to map import results statuses to Xray Test custom statuses

Whenever importing execution results, test statuses must be mapped to existing Test Run statuses if they exist, including custom test status.

Because some reports classify statuses with different names but with the same meaning, e.g. FAILED; FAIL; FAILURE; Xray will try to match these well known statuses with native Xray Test Statuses.