Unify the syntax update workflow

Currently, when we want to update the syntax of the language, we have to update multiple configuration files, so that all the editors are up to date.

The VSCode plugin has a script to help generate the syntax file: https://github.com/ArkScript-lang/ArkScript-VSC/blob/master/generation/runner.py

It would nice to be able to have a single file to describe the syntax and update all the config files (nano, vim, vscode, pygments...).

Could include:
- keywords
- macros
- standard functions