STLC++ language support for Zed (stlcpp)

This repository contains a Zed language extension for STLC++ (called stlcpp in this repo).

Upstream references

• STLC++ implementation (parser + semantics): https://github.com/aalto-opencs/stlcpp
• STLC++ tree-sitter grammar: https://github.com/aalto-opencs/tree-sitter-stlcpp