Describe the integration environtment

### Purpose

This environment is dedicated to running integration tests that are automatically triggered by the
CI/CD pipeline. Each core banking system integrated into our platform, such as Ledgers and
Mambu, has its own separate instance of this environment to ensure isolated and accurate testing.
Key Characteristics
1. One copy exists for each core banking system being integrated.
2. Integration tests validate the interaction between different components and services.
3. Ensures that the application works seamlessly across various banking systems.

### Setup
Each Integration Test Environment will be set up in a kubernetes cluster.