IntelOwl Connectors Manager and Integrations

<p>IntelOwl is an Open Source Intelligence (OSINT) solution designed with the intent to help the community to get threat intelligence data about an observable such as a specific file, an IP, etc from a single source at scale. One of the strongest limitations of this project is the lack of built-in integrations with other widespread open-source CTI platforms such as MISP and OpenCTI. I propose a new component of the project - a connectors manager which would help connect IntelOwl with any external tool for be it enhancing the data it generates or performing automated analysis on the data it generates; or those which would facilitate the integration with other threat intelligence platforms. Along with this, I would also add the integrations for MISP and OpenCTI which the community has been eagerly waiting for.</p>