Modify AltTester-Unity-SDK to use AltServer-Cloud-Server

[andreion1ca]

Description

Modify the AltTester-Unity-SDK to use the AltServer-Cloud-Server. When a connection is made to the Cloud Server, a license key will be sent in the header of the connection POST request.

Because users should have a license key in order to use the Cloud Server, we should also modify the UI of the AltDialog.

Mocks

Additional info

Issue for UI changes: https://github.com/alttester/AltTester-Unity-SDK/issues/1583