[14.0][ADD] document_page_reference_numeric

[eantones]

Supersedes #920

Split from #920. Odoo task: nuobit15-prod #2631 - [Qualitat] CONOCIMIENTO 3 - Referència numèrica única de 10 dígits.

[codecov]

Codecov Report

❌ Patch coverage is 93.00000% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.44%. Comparing base (e066126) to head (a3a73d4).

Files with missing lines	Patch %	Lines
document_page_reference_numeric/hooks.py	80.00%	1 Missing and 2 partials ⚠️
...ent_page_reference_numeric/models/document_page.py	89.47%	1 Missing and 1 partial ⚠️
...page_reference_numeric/tests/test_document_page.py	96.77%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             14.0     #922      +/-   ##
==========================================
+ Coverage   51.26%   51.44%   +0.18%     
==========================================
  Files        1180     1186       +6     
  Lines       20388    20488     +100     
  Branches     4298     4311      +13     
==========================================
+ Hits        10451    10540      +89     
- Misses       9683     9689       +6     
- Partials      254      259       +5     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[deeniiz]

@eantones , can you please review it?