publish npm package with latest only for non beta releases

[rluvaton]

What is the motivation?

To avoid installing beta when I run npm i surrealdb.js in new projects

What does this change do?

mark latest only versions that match the semver standard, and the rest with beta

What is your testing strategy?

Manually tested it

Is this related to any issues?

Not existing ones

Have you read the Contributing Guidelines?

• [x] I have read the Contributing Guidelines

[rluvaton]

You probably need a better way to manage versions, as there will come a day that you need to publish hotfix version to multiple version with different majors and it will be really hard

[kearfy]

Hey @rluvaton, thanks for this PR! We'll be merging #291 first and I'll merge this right after!