BREAKING(uuid/unstable): move v7 module to unstable-v7

[kt3k]

part of #5920

This PR makes UUID v7 APIs only available from @std/uuid/unstable-v7

[iuioiua]

LGTM! We should document this new approach to unstable modules.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.32%. Comparing base (635a886) to head (0a60563).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5937      +/-   ##
==========================================
- Coverage   96.32%   96.32%   -0.01%     
==========================================
  Files         483      483              
  Lines       39415    39403      -12     
  Branches     5838     5838              
==========================================
- Hits        37968    37956      -12     
  Misses       1405     1405              
  Partials       42       42              

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[iuioiua]

Can you please add this file to the super doc linter as now it's not included in uuid/mod.ts?

[iuioiua]

We should also probably change the title of the PR to be easier to spot for users. Like "move x to unstable-x"