Built-in RSS client to consume data

[SamuelHassine]

Use case

Add a built-in RSS client to the platform to consume data on the backend side.

On the frontend side:

1. In "Data", replace the section "Synchronization" by "Ingestion".
2. Implement a right menu with:
   2.1 OpenCTI streams
   2.2 RSS Feeds

[SamuelHassine]

• https://blog.google/threat-analysis-group (https://blog.google/threat-analysis-group/rss)
• https://securelist.com/category/apt-reports/ (https://securelist.com/category/apt-reports/feed/)
• https://www.malwarebytes.com/blog/category/threat-intelligence (https://www.malwarebytes.com/blog/feed/index.xml)

Precision:

• Often, only 1 RSS feed like the MalwareBytes one is proposed, but only one category (here threat intelligence) is interesting, This information is not really available in the XML balises, so it could be great just to be able to filter based on a keyword, here just "Threat Intelligence", which is part of the description:

But this is not mandatory (the filtering part).