refactor(UX): Salary Slip creation and submission via background job in Payroll Entry

[ruchamahabal]

Problem:

• If Salary Slips to be created/submitted via a Payroll Entry are > 30, a job is queued for the operation.
• While running payroll there are a couple of configurations and setups validated like accounts linked against salary components, the correctness of component formulae in the structures, etc.
• If salary slips are less than 30, such errors are shown right away. For queued jobs, the creation/submission fails without showing any error to the user and most of the errors here are configuration level errors.

submission-before.mp4

Solution

• Add a status field to Payroll Entry: Draft/Queued/Failed/Submitted/Cancelled

• Inform the user that the creation/submission is queued

  

• On failure, show the error message for corrective actions within the payroll entry

  failure-correction.mp4

[codecov]

Codecov Report

Merging #31074 (956a803) into develop (77dcdff) will increase coverage by 0.20%.
The diff coverage is 85.36%.

@@             Coverage Diff             @@
##           develop   #31074      +/-   ##
===========================================
+ Coverage    63.25%   63.46%   +0.20%     
===========================================
  Files          986      986              
  Lines        67372    67406      +34     
===========================================
+ Hits         42619    42781     +162     
+ Misses       24753    24625     -128     

Impacted Files	Coverage Δ
...ext/payroll/doctype/payroll_entry/payroll_entry.py	77.49% <85.36%> (+5.05%)	⬆️
erpnext/accounts/doctype/bank/bank.py	71.42% <0.00%> (-14.29%)	⬇️
...rial_no_valuation/incorrect_serial_no_valuation.py	85.96% <0.00%> (-10.53%)	⬇️
...pnext/stock/doctype/delivery_note/delivery_note.py	66.21% <0.00%> (-2.71%)	⬇️
erpnext/portal/utils.py	27.69% <0.00%> (-1.54%)	⬇️
erpnext/stock/report/stock_ledger/stock_ledger.py	84.92% <0.00%> (-0.80%)	⬇️
erpnext/stock/doctype/batch/batch.py	83.33% <0.00%> (-0.62%)	⬇️
erpnext/stock/report/stock_ageing/stock_ageing.py	95.19% <0.00%> (-0.49%)	⬇️
...xt/e_commerce/doctype/website_item/website_item.py	47.52% <0.00%> (-0.42%)	⬇️
erpnext/payroll/doctype/salary_slip/salary_slip.py	86.63% <0.00%> (-0.26%)	⬇️
... and 24 more