[WIP] NPC Dialogue (pt. 5)

A very short video demonstrating only a small amount of progress. The delay is mostly due to the need to clean up the codebase to enable others to help me - to start with I had to rewrite some sections of the script compiler. While I’m busy with refactoring please show some love to OpenMW devs who are also working on Oblivion/Fallout related functionality. Unlike my very old fork they are on the latest release of OpenMW - in other words their work is the future. @PetrMikheev @capocat Now an NPC may initiate a conversation with another NPC. Currently they are stuck saying the same thing all the time because I’ve not yet implemented the “Random“ response picking. Also I’m having trouble getting the conversation animation right - they should be standing and facing each other but they either turn around all the time or just start walking away... Overall this functionality is too fragile at the moment and will probably need to be re-done in a more robust way.