Rename admission_date to encounter_date and clean column

[rithviknishad]

Proposed Changes

• Rename admission_date to encounter_date
• Updated validations to allow encounter_date for all consultations
• ⚠️ Custom migration: set encounter_date to created_date for existing consultations that are not admission/domiciliary care or encounter_date is null.
• Alter field: encounter_date is non-nullable and defaults to now
• Discharge Summary: show both date and time of admission

Associated Issue

• Sanitise admission_date based on consultation suggestion care_fe#6669
• Rename admission_date to encounter_date and white label the field based on decision after consultation choice care_fe#6668
• Fixes Admission Date's time is missing from discharge summary care_fe#6727
• FE: Rename "Admission Date" to encounter specific labels care_fe#6719

Merge Checklist

• Tests added/fixed
• Update docs in /docs
• Linting Complete
• Any other necessary step

Only PR's with test cases included and passing lint and test pipelines will be reviewed

@coronasafe/care-backend-maintainers @coronasafe/care-backend-admins

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (c0bb3ba) 61.38% compared to head (3dda74e) 61.40%.
Report is 2 commits behind head on master.

Files	Patch %	Lines
...e/facility/api/serializers/patient_consultation.py	50.00%	1 Missing and 2 partials ⚠️
care/abdm/utils/fhir.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1728      +/-   ##
==========================================
+ Coverage   61.38%   61.40%   +0.01%     
==========================================
  Files         211      211              
  Lines       11595    11595              
  Branches     1660     1658       -2     
==========================================
+ Hits         7118     7120       +2     
+ Misses       4205     4204       -1     
+ Partials      272      271       -1     

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[sainak]

a few changes

[nihal467]

LGTM

[vigneshhari]

Resolve Conflicts.