Add coverage to multigroups processing and wazuh-db performance improvements

[QU3B1M]

Target version	Related issue	Related PR
4.4	#15665	#15742

Description

It is needed to develop performance tests to validate the performance of wazuh-db and the multigroups processing/generation.
The same performance test could be used in the future to validate other similar changes like the needed for the issue #3369

Proposed test cases

• Benchmarks tests cases from the issue #3269.

• Performance 2500 multigroups

  Test case

  1. Configure a wazuh-cluster
  2. Register 2500 wazuh-agents (they doesnt need to be active, just registered)
  3. Setup 2500 groups, + 2000 multigroups and + 50000 shared files
  4. Restart the master wazuh-manager
  5. Check how long takes to update shared files sums

     grep "c_files()" /var/ossec/logs/ossec.log 
     

Considerations