Syntax Highlighting

Better highlighting for knot/stitch/function parameters: highlight individual params, not punctuation.
Highlight strings and numbers in variable declarations.
Include theme files with comprehensive colors specifically for Ink.

Other desirable features

In order of complication...

Intellisense completion for knot/stitch/function names. Partially done; still needs:
- Completion for stitches/labels inside another knot
Go to definition for stitches and labels in different knots
Knot/stitch/function param hints
Codelens for function/knot/stitches
Codelens showing possible return points from a tunnel?
Inky/Unity tools esque interactive preview
Debugging