[FEATURE-BRANCH] feat: add Webhooks

[jfcalvo]

Description

This is the feature branch for Webhooks implementation.

Closes #1836

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested

• [ ] Manually tested locally and in HF spaces.

Checklist

• I added relevant documentation
• I followed the style guidelines of this project
• I did a self-review of my code
• I made corresponding changes to the documentation
• I confirm My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have added relevant notes to the CHANGELOG.md file (See https://keepachangelog.com/)