feat: Optionally allow rejected quality inspection on submission

[marination]

Issue:

• On creating a QI against a Purchase Receipt, it is possible that this QI is rejected.
• In this case, the submission of the Purchase Receipt is blocked due to a rejected QI.
• It could be possible that after rejection the rejected qty is updated in the Purchase Receipt and the user wants to submit it.

Solution:

• Added Action If Quality Inspection Is Rejected in Stock Settings
  
• If it is set to Warn it will show a toast message on submission, if not it will block the submission
  
• Cleaned up code to make it more readable

Docs: frappe/erpnext_documentation#365

[coveralls]

Coverage increased (+0.0002%) to 42.867% when pulling f67f13c on marination:qi-rejection-develop into 727e5d1 on frappe:develop.

[marination]

@Mergifyio backport version-13-hotfix

[mergify]

Command backport version-13-hotfix: success

Backports have been created

• #27905 feat: Optionally allow rejected quality inspection on submission (backport #26421) has been created for branch version-13-hotfix

[marination]

already ported to v13 via branch backport