Loading medibase and icd11 static json

[DraKen0009]

Proposed Changes

1.Updated medibase.json

• removed _id field
• added id field

2.Updated MedibaseMedicine model , removed external_id

3.Updated python manage.py load_redis_index command to directly use the json to populate the redis

4.Migrate all related models to use id as fk instead of external_id [ working on it ]

Associated Issue

• Load medibase and icd11 from static json #1817

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

[DraKen0009]

please let me know if i missed any use of external_id in reference to MedibaseMedicine model

[sainak]

this is a generated field,
https://github.com/DraKen0009/care/blob/09813dfaf1e05ab76dc833bd135734ca01c0fa45/care/facility/management/commands/load_icd11_diagnoses_data.py#L142-L143

[DraKen0009]

• made some changes to load_icd11_diagnose_data file.
• updated migrations field for removing external_id before populating data

[sainak]

@DraKen0009 extract the logic from the management command to a common utils file

the migrations will be complex

1. clear the migration where we are loading the medicines
2. create the unique id fields but dont make them primary key
3. add the load_medicine_data migration, make sure the external_id remains consistent
4. create new nullable foreign key relations to the id field wherever we are referencing the external_id
5. populate the new foreign key fields
6. remove the old fk fields
7. rename the new fk fields to the old name so the other code does not break
8. make id primary key
9. remove external_id

[DraKen0009]

contd. #1941