[Comlaude] improvements

[yassine-ouaamou]

I am creating this issue to include the following improvements on the connector:

• Add the “_deserialize_json_string” function to convert the JSON-formatted text string into a python object, which eliminates json errors when executing on OpenCTI.
• Add “_validate_required_fields” function to check that all required data (mandatory fields) are present and not empty, which also prevents errors in OpenCTI executions
• Add the “_ping_connector” function, which pings the connector every 5 minutes to keep it active (by modifying the “run” function).
  Status tracking with “last_run” variable in format “{”last_run“: ‘2024-11-18T15:13:36Z’}”.