Create plugin with multiple blocks

I edited the start/build scripts in package.json to this and it works.

"build": "wp-scripts build --webpack-src-dir=block/post-type-register/src --output-path=block/post-type-register/build",
"start": "wp-scripts start --webpack-src-dir=block/post-type-register/src --output-path=block/post-type-register/build"