Refactor Message Output for Common Schema Compliance

[vikman90]

Parent Issue: #253

Description

Refactor the agent's message output to comply with the common schema, ensuring compatibility and consistency across systems.

Tasks

• Update the Queue component:
  • Include new module type column.
  • Include new module metadata column.
• Modify message output to use a JSON stream format.
• Add an agent header to the message output.
• Include a metadata object before the data object in the output.
• Apply the changes to both stateful and stateless message types.
  • Update Logcollector module to support new Stateless message structure.

References

• Common schema definitions: Wazuh Indexer Plugins
• ECS documentation: Elastic ECS Documentation