[ServiceNow] Create the connector - retrieve associated observables & IOCs from incidents

[nino-filigran]

Use case

In SIR module, incidents can contain observables & ioc, depending whether or not the users have access to the Threat Intelligence modules (& tables). The goal is to add on the top of the incidents the associated observables & IOCs.

Current Workaround

Proposed Solution

Additional Information

Would you be willing to submit a PR?

We strongly encourage you to submit a PR if you want and whenever you want. If your issue concern a "Community-support" connector, your PR will probably be accepted after some review. If the connector is "Partner-support" or "Filigran-support", a dev team make take over but will base its work on your PR, speeding the process. It will be much appreciated.