Home Multitenancy implementation

[Illia-Shchur]

1. Add multitenancy to our application using Postgres Row Level Security (Postgres Policies).
2. You need to add another user to our databases with rights to read and delete entities.
3. You need to add discriminator value to all tables wich need to be tenantified (cooperation_id).
4. Add dynamic datasource resolver for our jobs so that jobs could work around our policies.

[Illia-Shchur]

Dev notes:

5. Info about multitenancy (https://callistaenterprise.se/blogg/teknik/2020/09/19/multi-tenancy-with-spring-boot-part1/).
6. Link to working proof-of-concept https://github.com/Illia-Shchur/Postgres-RLS-Multitenancy;