Update Syntax Highlighting

[turbolent]

Context

Since the release of the extension Cadence has gained some more features. Make sure the grammar is up-to-date.

Definition of Done

• [ ] Improve the syntax highlighting for Cadence by updating the grammar
  • [ ] Pragmas

[turbolent]

Why did this get closed?

[devbugging]

@DylanTinianov This would be a relevant improvement for current ongoing work. I would say adding pragma syntax highlighting as well as documentation around pragma would be nice.