Add PostGIS extension to database

[andrea-williams]

Describe the task

Based on anticipated future work for Registration Part 2 regarding mapping/GIS stuff, it would be useful for us to have PostGIS installed on our databases to enable geospatial queries and overall better handling of geospatial data.

Installation instructions: https://postgis.net/documentation/getting_started/

Acceptance Criteria

• [ ] install PostGIS extension on our PROD database
• [ ] install PostGIS extension on our database in TEST
• [ ] install PostGIS extension on our database in DEV
• [ ] add the PostGIS extension installation command to the create_db Make command for our local development

Additional context

• geographic coordinates are included in the Facility model (#1320 ) so ideally this ticket will be done soon
• example usage: we can use PostGIS to compare a facility's user-inputted geographic coordinates against an imported shapefile of BC to ensure that all facilities are within BC.

[Sepehr-Sobhani]

Useful doc: https://docs.djangoproject.com/en/5.0/ref/contrib/gis/install/postgis/

[hannavovk]

Better requirements needed. If we pull this in first need a card to gather requirements.