feat(OP-2576): Add bulk synthetic data generator command

[sunilparajuli]

Summary

Create Django management command to generate bulk synthetic test data for insurees, families, policies, and claims for performance testing and development environments.

Background

Currently, we lack sufficient test data to properly evaluate system performance under realistic load conditions. Manual data entry is time-consuming and doesn't scale for performance testing scenarios where we need thousands of records.

Usage Examples

# Small test dataset
python manage.py generate_synthetic_data --preset small

# Custom configuration
python manage.py generate_synthetic_data --families 10000 --members 4 --claims 2

# Large dataset for load testing
python manage.py generate_synthetic_data --preset large --no-confirm

[sunilparajuli]

init.py was missing under command & leaf folder as well.

[weilu]

@sunilparajuli please also consider reusing or deleting this: https://github.com/openimis/openimis-be-insuree_py/blob/develop/insuree/management/commands/generateinsurees.py

[sunilparajuli]

@sunilparajuli please also consider reusing or deleting this: https://github.com/openimis/openimis-be-insuree_py/blob/develop/insuree/management/commands/generateinsurees.py

I will consider carefully removing this in next PR

[weilu]

Would these cause circular dependency issues? Should this script be moved to medical/claim/assembly module?

[sunilparajuli]

yes this could raise circular dependency as of now, to avoid i can move it to the functions below but i agree it should be moved to medical/claim module. I will move it to claim or medical which seems most fit.