Lint the whole code base with JSCPD

[ferrarimarco]

Fixes #1619

Proposed Changes

This PR adds support to run JSCPD on the codebase as a whole if VALIDATE_JSCPD_ALL_CODEBASE is set to true.

Readiness Checklist

Author/Contributor

• If documentation is needed for this change, has that been included in this pull request

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance

Requisites

• R cannot find a required library #2199
• Add RUST_2021 test and fix RUST_2021 file list #2215

[admiralAwkbar]

@ferrarimarco I really like the approach but the main thing I can see is that if a user has a large codebase with multiple other languages, they could get longer times as it's going to check everything else...

But the complexity to try to distinguish all that currently I don't think is worth the effort...

This is likely the best, most simple fix to get that to work

[ferrarimarco]

We could have a separate flag. It's easy to add, and could be flagged as non-breaking that way. Maybe it's worth adding?

[admiralAwkbar]

@ferrarimarco I like the idea, its more of a feature add, vs changing the way it works...

[ferrarimarco]

@admiralAwkbar done, defined a new variable as requested. The thing is that we need to check our own duplications :) (or tune JSCPD until we're ready to deal with that).

[ferrarimarco]

@admiralAwkbar all green! Merging the latest changes from main...