Rename field ventilator_fi02 to ventilator_fio2

[rithviknishad]

Proposed Changes

• Rename field ventilator_fi02 to ventilator_fio2
• Custom migration to migrate existing event entries that contain ventilator_fi02 in meta to ventilator_fio2

Forward migration:

Reverse migration:

Associated Issue

• Correct spelling mistake of daily round field: ventilator_fi02 to ventilator_fio2 care_fe#8241
• FE: Corrected Spelling mistake of daily rounds fields: ventilator_fi02 to ventilator_fio2 in Frontend #8241 care_fe#8268

Merge Checklist

• Linting Complete
• Any other necessary step

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.70%. Comparing base (2221b06) to head (cba042a).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2356   +/-   ##
========================================
  Coverage    63.70%   63.70%           
========================================
  Files          238      238           
  Lines        13378    13378           
  Branches      1907     1907           
========================================
  Hits          8522     8522           
  Misses        4506     4506           
  Partials       350      350           

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