this section of code could really stand a total rewrite. Fixes issues with longer-than-16-character coloration, doesn't fix trouble with longer-than-32 if there is any (based on Discord reports)
also add back-support for if the original IDs are used (there's no good generic legacy ID upverter, but recognizing the old default numbers should suffice for 99% of servers). Should be cross-compatible with all supported minecraft versions, but is *required* in particular for 1.13
* Improve handling of NPC names, fixes#1640
Moves the logic to a Util method (instead of duplicated in each module), and adds the "prefixColors" portions (replacing just a static 'RESET' code).
If colors and effects are combined, using only the most recent effect is sufficient (eg reapplying bold) as that should produce effectively no change while still having a color code stuck into the name as is needed to break NPCs looking like real players internally.
* Additional NPC name improvement: fix color code splliting
a name consisting of a color code followed by 15 letters would get split in the middle of the color code, rather than around it. This fixes that.
Some misplaced code unintentionally caused chunks to load in the middle of the startup sequence (after NPCs refused to spawn in the chunk, but before the server was fully started), meaning any chunk that normally loads within a few seconds of startup would be loaded already at that time, meaning a chunk load event never fires, and thus any NPCs at that location simply don't spawn in until the chunk is allowed to naturally unload and is later loaded again.
