chore: use npm workspaces and a package-lock.json (open-telemetry#1771)

Co-authored-by: Marc Pichler <[email protected]>

Author: trentm

package.json

@@ -16,7 +16,7 @@
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint . --ext .ts --fix",
     "watch": "tsc --build --watch tsconfig.json tsconfig.esm.json",
-    "prepare": "npm run compile"
+    "prepublishOnly": "npm run compile"
   },
   "keywords": [
     "opentelemetry",