Add documentation section explaining how to process AWS custom logs

[CarlosRS9]

This issue is related to wazuh/wazuh#13577. The idea is to update the documentation to explain to the user that it is possible to process custom logs, both via S3 as detailed in wazuh/wazuh#13577 and via CloudWatch Logs. We should consider creating a new page dedicated to this purpose, with examples of how to use it and making it clear that it is necessary to create custom rules, as well as adding a link to the documentation of the custom rules. It would also be interesting to update the table of supported services to refer to this functionality.

[Selutario]

Already done in:

• New Custom Logs Buckets documentation #6254