MAXScript: Various improvements

[RunDevelopment]

Changes:

• Fixed constant vs color confusion. Seems like I swapped the regex at some point...
• Made on and off keywords instead of booleans. This is closer to how the language interprets code and makes it easier to implement function calls.
• Added function calls (as requested by @I-d-as). The detected syntax is intentionally restrictive to prevent false positives. This leads to a few false negatives (e.g. around case statements) but I think that's okay for now.

Example:

[github-actions]

JS File Size Changes (gzipped)

A total of 1 files have changed, with a combined diff of +142 B (+20.2%).

Details

file	master	pull	size diff	% diff
components/prism-maxscript.min.js	702 B	844 B	+142 B	+20.2%

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