Added the Zvelo feed import connector (first draft)

[Jermain-N]

Proposed changes

*New connector for Zvelo.com feed

Related issues

*https://github.com/OpenCTI-Platform/connectors/issues/2591

Checklist

• [ ] I consider the submitted work as finished
• [ ] I tested the code for its functionality using different use cases
• [ ] I added/update the relevant documentation (either on github or on notion)
• [ ] Where necessary I refactored code to improve the overall quality

Further comments

To be discussed with the community member who wrote this.