[stable8] feat: add NcFormBox and adjust NcRadioGroup to NcFormBox and NcFormGroup

[backportbot]

Backport of #7690

Warning, This backport's changes differ from the original and might be incomplete ⚠️

Todo

• Review and resolve any conflicts
• Amend HEAD commit to remove the line stating to skip CI

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[AndyScherzinger]

🐘

[ShGKme]

Requires merged NcFormGroup backport

[ShGKme]

having [Vue warn]: useCssModule() is not supported in the global build but unsure if it is a styleguidist issue, checking

[codecov]

Codecov Report

❌ Patch coverage is 61.29032% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.00%. Comparing base (68e8736) to head (7385a25).
⚠️ Report is 8 commits behind head on stable8.

Files with missing lines	Patch %	Lines
src/components/NcFormBox/NcFormBox.vue	56.00%	11 Missing ⚠️
src/components/NcFormBox/useNcFormBox.ts	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           stable8    #7765      +/-   ##
===========================================
+ Coverage    44.88%   45.00%   +0.12%     
===========================================
  Files          180      182       +2     
  Lines         4465     4495      +30     
  Branches      1168     1174       +6     
===========================================
+ Hits          2004     2023      +19     
- Misses        2366     2377      +11     
  Partials        95       95              

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[AndyScherzinger]

🎉