[Webhook] Init connector

[Renizmy]

Proposed changes

• Add a new connector Webhook which will relay events

Checklist

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

Open to discuss :)

[Lhorus6]

I've talked about it with @Renizmy, we can merge

[Renizmy]

@helene-nguyen, it took a while but it is fixed