Rework the device selection part of the tutorial

[SaschaWillems]

Right now it does some "sustainability" check that doesn't really make sense. It prefers devices with geometry shader support (though it's nowhere used in the tutorial) and calculates some score based on min. 2D image size.

See https://vulkan-tutorial.com/Drawing_a_triangle/Setup/Physical_devices_and_queue_families#page_Base-device-suitability-checks

That's very misleading and many people just copy it . For something like a tutorial it would be best to just have the user select the device from a list of available devices.

Note: Copied from the old repo's project board

[SaschaWillems]

We really should redo this. This often comes up on Discord as people think calculating a score like shown in the tutorial is a good idea, leading to lots of confusion.