feat: port a few type factories

Author: mtth

README.md

@@ -12,4 +12,5 @@ specification](https://avro.apache.org/docs/current/spec.html).
 * [ ] Add `avsc` shim
 * [ ] Add benchmark
 * [ ] Update README
+* [ ] Update metadata in all package.json
 * [ ] Add migration guide

packages/types/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "@avro/types",
+  "version": "0.0.0",
+  "repository": "github:mtth/avsc",
+  "description": "Avro serialization for JavaScript",
+  "homepage": "https://github.com/mtth/avsc",
+  "author": "Matthieu Monsch <mtth@apache.org>",
+  "license": "MIT",
+  "type": "module",
+  "files": [
+    "lib/"
+  ],
+  "exports": "./lib/index.js",
+  "scripts": {
+    "build": "tsc -b src test",
+    "clean": "rm -rf lib node_modules out",
+    "fix": "prettier --write",
+    "prepare": "pnpm run build",
+    "test": "vitest",
+    "watch": "tsc -b -w src test"
+  }
+}
+