Version package.json from Cargo.toml (via script)

[jacogr]

Adds scripts/js/align_version.mjs that does the following -

1. reads the Cargo.toml
2. adjust the package.json version with the version from step 1

It is executed via npm run alignVersion. At this point it is done manually, but in a perfect world, should just be done on CI and pushed back to the repo (when there are changes) to remove all manual steps. And then for extra bonus points publish to the npmjs registry.,

Additionally, the PR also adds -

• an updated .gitignore to skip the node_modules folder
• a package-lock.json generated from npm install
• bumped version in package.json from running the added command