feat: Splitting group assets

[deepeshgarg007]

Provision to split assets based on asset quantity

Splitting an Asset

Asset.Splitting.mp4

1. Create an Existing Asset with asset qty more than 1
2. Try splitting the asset based on qty as shown above and see if the amount gets updated proportionally in both the assets

no-docs

[codecov]

Codecov Report

Merging #29350 (4d87465) into develop (452a809) will increase coverage by 0.08%.
The diff coverage is 87.67%.

@@             Coverage Diff             @@
##           develop   #29350      +/-   ##
===========================================
+ Coverage    58.52%   58.61%   +0.08%     
===========================================
  Files         1091     1091              
  Lines        67899    67985      +86     
===========================================
+ Hits         39740    39849     +109     
+ Misses       28159    28136      -23     

Impacted Files	Coverage Δ
erpnext/assets/doctype/asset/asset.py	78.88% <87.67%> (+3.26%)	⬆️
...rial_no_valuation/incorrect_serial_no_valuation.py	85.96% <0.00%> (-10.53%)	⬇️
erpnext/stock/report/stock_ledger/stock_ledger.py	82.92% <0.00%> (-2.44%)	⬇️
.../report/stock_projected_qty/stock_projected_qty.py	88.15% <0.00%> (-1.32%)	⬇️
erpnext/stock/report/stock_ageing/stock_ageing.py	91.90% <0.00%> (-1.16%)	⬇️
erpnext/controllers/stock_controller.py	89.64% <0.00%> (-1.02%)	⬇️
erpnext/projects/doctype/project/project.py	54.54% <0.00%> (-0.70%)	⬇️
erpnext/selling/doctype/quotation/quotation.py	49.18% <0.00%> (-0.55%)	⬇️
erpnext/hr/utils.py	74.80% <0.00%> (-0.40%)	⬇️
erpnext/stock/stock_ledger.py	85.60% <0.00%> (-0.37%)	⬇️
... and 13 more