[241] ReCaptcha wiki update

[AjobK]

Current state Currently there is no up-to-date wiki describing ReCaptcha.

Expected state There is a wiki describing the way ReCaptcha works in our current state of the application.

TO DO

• [x] Introduction to ReCaptcha (What is it?)
• [x] Reasoning for implementation (Why do we use it?)
• [x] General explanation of ReCaptcha auth flow
• [x] How to disable ReCaptcha for development purposes

Necessities None

Branch None