Fix 16:9/ultrawide cutscenes flaws

[BC46]

We all know that Freelancer was never made to be played in 16:9/ultrawide. Hence there are quite many imperfections that are apparent during the cutscenes, e.g. floating objects and characters appearing out of nowhere. We should fix these for a more enjoyable story experience in 16:9, and possibly even 48:9.

• [ ] Fix the issues related to characters and props in the mission scripts (pop-ins and pop-outs).
• [ ] Fix the building-related issues (e.g. in planetscapes).
• [ ] Fix ships appearing/disappearing in planetscape land and launch scripts