From cvss40 to cvss4 for future usage

[n3rada]

This is my final pull request, following our recent discussion. To maintain a more coherent naming convention—considering the repository is named cvss-v4-calculator and @nickleali mentioned v4.1—it seems more appropriate to have a file named cvss4.js. This way, we can extend classes for specific versions in the future.

What do you think about this approach?

[superbuggy]

I'm fine with the class name change, but would prefer the 4.0 to be kept in comments and in the UI for the sake of accuracy. What is the reason for the change? I didn't understand that this change would be entailed from the discussion #63

[n3rada]

Good for you?

[pandatix]

Let's dive in the history of CVSS. In v3.0 there were maths, and in v3.1 they changed a bit.
With the current strategy, moving from CVSS40 to CVSS4 would require us to later rollback to support a new iteration. Or am I wrong ?

It is not planned to change maths yet, but I don't think it is required to move from CVSS40 to CVSS4 neither.

[skontar]

I think it was "4" before and then "4.0" later and then there was some discussion about potentially having 4.1 in the future. To be honest, I have preference to leave things as is at the moment and close this PR. We can always change and rename things later if needed and when needed.

[n3rada]

Agreed, @skontar. My initial idea was to keep this repository up and running for any upcoming versions, in order to be prepared for CVSS 4.x. I'll close it! Thanks to all of you for always being professional.