feat: allow user to change the parent company

[anupamvs]

Issues-

• Currently, users are not able to change the parent company of a company.
• To view the Consolidated Financial Statements, the User would like to make these companies child companies under one Parent company.

Fix-

• Made Parent company field editable.
• rebuild tree, if the parent company is changed.
  

docs- https://docs.erpnext.com/docs/v13/user/manual/en/setting-up/company-setup#210-change-parent-company

[codecov]

Codecov Report

Merging #28983 (f3c5cb9) into develop (56b9ad8) will decrease coverage by 0.08%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop   #28983      +/-   ##
===========================================
- Coverage    55.68%   55.60%   -0.09%     
===========================================
  Files         1129     1129              
  Lines        67471    67479       +8     
===========================================
- Hits         37574    37524      -50     
- Misses       29897    29955      +58     

Impacted Files	Coverage Δ
erpnext/setup/doctype/company/company.py	72.66% <100.00%> (+0.72%)	⬆️
...eport/item_variant_details/item_variant_details.py	31.32% <0.00%> (-53.02%)	⬇️
...tch_item_expiry_status/batch_item_expiry_status.py	69.23% <0.00%> (-25.00%)	⬇️
erpnext/education/doctype/student/student.py	73.68% <0.00%> (-3.16%)	⬇️
erpnext/stock/report/stock_ledger/stock_ledger.py	74.79% <0.00%> (-2.44%)	⬇️
erpnext/stock/report/stock_ageing/stock_ageing.py	91.32% <0.00%> (-2.32%)	⬇️
...ion/doctype/course_enrollment/course_enrollment.py	44.00% <0.00%> (-2.00%)	⬇️
...eorder_level/itemwise_recommended_reorder_level.py	92.45% <0.00%> (-1.89%)	⬇️
.../hr/doctype/upload_attendance/upload_attendance.py	44.69% <0.00%> (-1.52%)	⬇️
erpnext/stock/get_item_details.py	79.29% <0.00%> (-0.16%)	⬇️
... and 11 more

[anupamvs]

@Mergifyio backport version-13-hotfix

[mergify]

backport version-13-hotfix

🟠 Waiting for conditions to match

• merged [:pushpin: backport requirement]

[mergify]

backport version-13-hotfix

✅ Backports have been created

• #29138 feat: allow user to change the parent company (backport #28983) has been created for branch version-13-hotfix