Start adding .asc signature files for tar files to validate signature

[omarismail94]

What is the problem this feature will solve?

Right now, node uses SHA256 checksums to verify published artifacts like tars. Signatures offer stronger security. Some packages already do this like Yarn: https://github.com/yarnpkg/yarn/releases/tag/v1.22.17

What is the feature you are proposing to solve the problem?

Start adding .asc signature files in index (e.g. https://nodejs.org/download/release/v16.20.2/)

What alternatives have you considered?

No response