Migrate API security endpoints to the indexer

[GGP1]

Description

The management API /security endpoints rely on the RBAC information provided by the legacy rbac.db SQL database. In #27706, we updated most of the old RBAC implementation to use the indexer.

In this issue, we should update all the /security endpoints controllers and framework to use the new PoliciesIndex, RolesIndex, RulesIndex and UsersIndex classes from the indexer client to get the information required.

Additionally, we should define a plan to carry out the necessary API Integration tests.

Checks

The following elements have been updated or reviewed (should also be checked if no modification is required):

• Tests (unit tests, API integration tests).
• Changelog.

[fdalmaup]

Blocked until wazuh/wazuh-indexer-plugins#288 is finished since the final structure of the Indexer indices has not been developed.