Add delete question (extraction and rob) endpoint. Check description for more details.

[matheusspacifico]

Spreadsheet with all deletion endpoints information:

https://docs.google.com/spreadsheets/d/1i8aFCTuxRv0TWXNWbLgo_vvbThqoqKZopzNyLV9uHws/edit?gid=861903238#gid=861903238

This one specific:

• Manual cleanup required for related answers

Safe deletion flow:

1. Delete question answers
2. Delete question