Add syntax highlighting

[RobbyCBennett]

Problem(s) this feature will solve

• Add colors to languages that don't have syntax highlighting by default (Ada, assembly, Fortran, Delphi/Pascal, VHDL, Visual Basic)
• Improve colors to languages that already have syntax highlighting by default (C, C#, C++, Java, Python, web languages - in C-like languages, most identifiers are the default color with some exceptions)

Describe the solution you'd like

Add syntax highlighting into the language server and/or the vscode plugin

[RobbyCBennett]

https://github.com/microsoft/vscode-extension-samples/blob/main/semantic-tokens-sample/src/extension.ts