Add eFACTION.Sisters and eFACTION.Inquisition to imperial ship detection logic

**Context:**
In `scripts/scr_ork_fleet_functions/scr_ork_fleet_functions.gml` around line 67, there is a TODO to add eFACTION.Sisters and eFACTION.Inquisition to the imperial ship detection logic.

**Related PR:** #24
**Comment:** https://github.com/Blogaugis/Space-Brigade-Master/pull/24#pullrequestreview-3511947669
**Requested by:** @Blogaugis