Added helper script responsible for downloading browser extension binaries to be used at testing (Keychain is on the list atm)

Added filtering out non-json output produced by pnpm --json option, what leads further processing to fail.

npm_publish.sh script should accept local mods (to include generated urls to documentation and version info)

Bumped playwright version to 1.50.1. Unified rollup and ts-proto specification to the versions effectively installed

atm to install any newer)

- emsdk to 4.0.1
- TypeScript to 5.7.3
- PlayWright to 1.49
- NodeJS to 20.18.1
- PNPM to 9.15.4

.filter_out_swagger_json template generates version and updates it in the produced swagger.json file.

npm_generate_version.sh adjusted to non annotated tags having no taggerdate, so its sorting was invalid. Also prerequisites to generate version for swagger.json files.