[14.0][MIG] agreement_legal (Version 12.0 to 14.0)

[MIG] Black & Cleanup

[IMP] Reviewer Requested Changes

[IMP] Black

[IMP] Reviewer Suggestion

[FIX] Tests

[FIX] Multiple Issues

- Added 'is_old_version' field to better display old versions. Before these were marked as inactive therefore not showing in the agreement.
- 'is_template' field now copies when making a template revision or copying a template.
- New Versions now retain original create date.
- Moved version/revision and created on/by fields out of footer to top in order to have the save buttons when creating children.
- Moved demo data out of data folder into the demo.xml

[FIX] demo data

[FIX] Revert back to only migration

[FIX] Report dynamic field rendering

[FIX] Test

agreement_legal/data/module_category.xml

@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <odoo>
 
     <record id="agreement" model="ir.module.category">