Allow local `secret-sync` instances to define which bridgehead groups are created in Authentik

[djuarezgf]

Description

Currently, secret-sync creates a fixed set of bridgehead groups in Authentik. These groups are always the same, regardless of the specific needs of a particular bridgehead.

Problem

This approach leads to:

• The creation of unnecessary groups in Authentik.
• A lack of flexibility for bridgeheads that require a custom group setup.

Proposed Solution

Change the behavior so that the local secret-sync instance running in each bridgehead determines which groups should be created in Authentik based on the selected modules. This information should be sent to the central secret-sync, which then ensures that only those specified groups are created and maintained.

Benefits

• More flexibility for local configurations.
• Cleaner Authentik setup with only the necessary groups.
• Improved maintainability by avoiding unused or irrelevant groups.