refactor: cleanup interviews

[krantheman]

Issue

Closes: #781

Changes

• Redid Feedback section of the Interview DocType
  • Eliminated data duplication by removing average rating, result, and other fields from the Interview Detail table. This table only has an Interviewer link field now.
  • Added a Feedback tab that summarizes and displays data directly from Interview Feedback
• Made Interview Type optional for Interview Round
• Updated applicable interviewers to default to Interview Round Interviewers
• Updated Submit Feedback button in Interview to be disabled, but visible, for unauthorized users (as opposed to not being rendered at all)
• Fixed issue where cancellation of an individual Interview Feedback required all docs of the same Interview to be cancelled
• Removed unnecessary overlap validation to allow for more flexibility
• Updated tests to reflect changes
• Updated Appraisal -> Feedback tab to use the same feedback summary & history templates as Interview -> Feedback

Documentation

https://frappehr.com/docs/v14/en/interview-management

[codecov-commenter]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (dfb9712) 72.48% compared to head (f935cb3) 72.26%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #924      +/-   ##
===========================================
- Coverage    72.48%   72.26%   -0.22%     
===========================================
  Files          201      201              
  Lines        10946    10941       -5     
===========================================
- Hits          7934     7907      -27     
- Misses        3012     3034      +22     

Files	Coverage Δ
hrms/hooks.py	100.00% <ø> (ø)
...ms/hr/doctype/interview_detail/interview_detail.py	100.00% <ø> (ø)
...r/doctype/interview_feedback/interview_feedback.py	93.18% <100.00%> (-0.94%)	⬇️
hrms/hr/doctype/interview_round/interview_round.py	38.88% <0.00%> (ø)
hrms/hr/doctype/job_applicant/job_applicant.py	64.28% <0.00%> (ø)
hrms/hr/doctype/interview/interview.py	64.41% <88.00%> (+0.44%)	⬆️

... and 7 files with indirect coverage changes

[ruchamahabal]

• make the feedback cards tighter - reduce padding
• star distribution chart - remove colors - convert to gray (like appraisal feedback summary)
• Font size for chart labels & rating - looks bigger than feedback font
• Rating summary header font sizes should be consistent with section heading sizes
• Tighter spacing in summary - between "based on x reviews" and the stars

Extra:

• Reuse/change appraisal feedback template
• Reduce spacing between section title & description

[ruchamahabal]

@Mergifyio backport version-15-hotfix

[mergify]

backport version-15-hotfix

❌ No backport have been created

• Backport to branch version-15-hotfix failed

Git reported the following error:

error: commit 0ff94289cd53513b18ff88dd8e257aadc89bccee is a merge but no -m option was given.
fatal: cherry-pick failed

[ruchamahabal]

@Mergifyio copy version-15-hotfix

[mergify]

copy version-15-hotfix

❌ No copy have been created

• Copy to branch version-15-hotfix failed

Git reported the following error:

error: commit 0ff94289cd53513b18ff88dd8e257aadc89bccee is a merge but no -m option was given.
fatal: cherry-pick failed

[ruchamahabal]

@krantheman can you open a PR on v15 hotfix

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #1243. Mergify cannot evaluate rules on this PR. ⚠️