Init work on postgresql implementation to the dashboard to get cases inside PGSQL

[aluneau]

PR Description

I did initiate work on postgresql database implementation.
The goal would be to get cases on the postgresql database as well as on Redis for a start, then add further things on the postgresql
I want to use Alchemy as ORM
What is added:

• db.py: contains configuration of the postgresql database
• models.py: contains the models I did start to create the case model it contains only caseNumber for now I will add more columns. Also I did test JSONB column it seems to be something we should use for some fields
• dependencies.py dependencies injection
• docker-compose modification to run a local environment, OCP postgresql will be needed for production

What's left to do

• ✅ init the database connection + main files
• ✅ create table migration if database is empty
• ✅ modify docker-compose
• ✅ create a first table including some columns
• ✅ test JSONB column type
• ❌ finish case table, include more columns
• ❌ add all cases that are caught inside get_cases function into the postgresql database
• ❌ OCP implementation: adding postgresql database YAML files (deployment/service...) / Use a postgresql instance already present
• ❌ env variables for postgresql connection
• ...