feat: add readme and new package

Author: HerringtonDarkholme

README.md

@@ -0,0 +1,22 @@
+# rust-tree-sitter-wasm
+
+This package provides binding to make tree-sitter work with Rust in browser.
+
+## Architecture
+
+```mermaid
+graph TD;
+web_ts_npm("web-tree-sitter(npm)") --> web_ts_sg_npm("web-tree-sitter-sg(npm)")
+web_ts_sg_npm -->|wasm-bindgen| web_ts_sg_crate("web-tree-sitter-sg(Rust crate)")
+web_ts_sg_crate -->|target:wasm| ts_facade_crate("tree-sitter-facade(Rust crate)")
+ts_crate("tree-sitter(Rust crate)") -->|target:native| ts_facade_crate
+
+classDef crate fill:#dea584,stroke:#333;
+classDef npm fill:#f1e05a,stroke:#333;
+
+class web_ts_npm npm;
+class web_ts_sg_npm npm;
+class web_ts_sg_crate crate;
+class ts_facade_crate crate;
+class ts_crate crate;
+```

web-tree-sitter-sg/index.js

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+// @ts-check
+"use-strict";
+
+// this is a silly reexport because wasm-pack cannot handle
+// `const Parser = require('web-tree-sitter')`
+// nor web-tree-sitter behave as a good export citizen
+const TreeSitter = require("web-tree-sitter");
+module.exports = {
+  Parser: TreeSitter,
+  Language: TreeSitter.Language,
+  init: TreeSitter.init,
+};

web-tree-sitter-sg/package.json

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+{
+  "name": "web-tree-sitter-sg",
+  "description": "Tree-sitter bindings for the web repackaged for compatibility with wasm-bindgen",
+  "version": "0.20.8",
+  "license": "Apache-2.0 WITH LLVM-exception",
+  "author": {
+    "name": "Herrington Darkholme",
+    "email": "[email protected]",
+    "url": "https://github.com/herringtondarkholme"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ast-grep/tree-sitter-wasm"
+  },
+  "main": "index.js",
+  "scripts": {},
+  "dependencies": {
+    "web-tree-sitter": "0.20.8"
+  }
+}