node-cjs-interop-finder: Add bin field in package.json

[odanado]

Thank you for useful tools.

There is no bin field in the package.json of node-cjs-interop-finder, so running it on npx will result in an error.

$ npx node-cjs-interop-finder
npm ERR! could not determine executable to run

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/odan/.npm/_logs/2022-02-21T03_55_02_281Z-debug.log

ref: https://docs.npmjs.com/cli/v7/configuring-npm/package-json#bin

[qnighy]

Fixed in d3c94bd. Thanks!