Setup.bat doesn't work with older versions of Vulkan SDK

[Pikachuxxxx]

Describe the bug

If the Vulkan SDK is found it doesn't work with that, also having copy commands for the dlls/lib files would be better.

To Reproduce

Clean cloning and installation of the Engine using Setup.bat on a machine that previously has Vulkan SDK installed can cause this issues

Operating system: (please complete the following information)

• OS: [ win-64]
• Version: [Windows 10 home]

Additional comments

Also check for previously configured Path variables for Vulkan and use that maybe? I definitely would not to re-download the Vulkan SDK again, also maybe use the same script to update the SDK to the latest version on request or not update and still work (because of my personal presences) would be helpful. Seems like a lot, I think it's better of we move to an actual setup UI real soon to accommodate for all the possibilities/issues.

[LovelySanta]

The copy command for the dll files is implemented in #437. So the remaining part is to prompt to update an 'old' SDK to the newer version... I thought if you tried installing the new SDK it would trigger the update? Is there something in particular that is required?