tree sitter foreign function interface

Motivation and Context

use typescript cst in LIGO.

Description

add ocaml types / foreign function interface for tree sitter and tree sitter typescript c library. The api for tree sitter is available here https://github.com/tree-sitter/tree-sitter/blob/master/lib/include/tree_sitter/api.h Please run the tree_sitter_example/example.ml to verify it works.

using nix, run the following commands to build and run

dune build 
dune exec lib/tree_sitter_example/example.exe

Component

• compiler
• website
• webide
• vscode-plugin
• debugger

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Performance improvement (non-breaking change that improves performance)
• None (change with no changelog)

Changelog

Add tree-sitter and tree-sitter-typescript libraries

Checklist:

• If a new syntax has been introduced, put a message on slack ligo-lsp
• Changes follow the existing coding style (use dune @fmt to check).
• Tests for the changes have been added (for bug fixes / feature).
• Documentation has been updated.
• Changelog description has been added (if appropriate).
• Start titles under ## Changelog section with #### (if appropriate).
• There is no image or uploaded file in changelog
• Examples in changed behaviour have been added to the changelog (for breaking change / feature).