[Feature Request]: Detailed third party integration guide

### Preflight Checklist

- [x] I have read the [Contributing Guidelines](https://github.com/EnAccess/micropowermanager/blob/main/CONTRIBUTING.md) for this project, if it exists.
- [x] I agree to follow the [Code of Conduct](https://github.com/EnAccess/micropowermanager/blob/main/CODE_OF_CONDUCT.md) that this project adheres to.
- [x] I have searched the [issue tracker](https://github.com/EnAccess/micropowermanager/issues) for a feature request that matches the one I want to file, without success.

### Problem Description

Third party integration are very different. Some configuration have to be done on **instance level** (like VPN Tunnels etc..) while other can be done on **Tenant level** (REST API's based...).

Currently, it's not clear.

### Proposed Solution

Have a clear guide and description in the deployment.

### Alternatives Considered

N/A

### Additional Information

_No response_