After a few days of research i found myself out of the problem here it is for anyone who may need it:

!!! USE AZURE WEB CLI CLIENT ID FOR STEP 1 & 3!!!

1.) in code call this link of microsoft https://login.microsoftonline.com/common/oauth2/v2.0/devicecode and request a device code

2.) give the device code to user and the URL for login which is in json.RootElement.GetProperty("verification_uri")

3.) poll the https://login.microsoftonline.com/common/oauth2/v2.0/token to get the access token until it gives u a successfull token (until the user logins succesfully), each 5secs for example

4.) congrats you now have the access token and can register an app