Set package.json main to "src/index.ts", add test all alias

package.json

@@ -2,7 +2,7 @@
   "name": "@pkl-community/pkl-typescript",
   "description": "Typescript bindings for Pkl",
   "version": "0.0.2",
-  "main": "lib/index.js",
+  "main": "src/index.ts",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/pkl-community/pkl-typescript.git"
@@ -21,6 +21,7 @@
     "test:e2e": "jest",
     "test:codegen": "pkl test $(find ./codegen/src/ -name '*.test.pkl')",
     "test:snippet": "pkl test ./codegen/snippet-tests/test.pkl",
+    "test": "npm run test:codegen && npm run test:snippet && npm run test:e2e",
     "dev": "tsx pkl-gen-typescript/main.ts",
     "gen-snippets": "npm run dev -- --settings-file codegen/snippet-tests/generator-settings.pkl -o codegen/snippet-tests/output codegen/snippet-tests/input/*.pkl"
   },