When Vulkan devices are enumerated, this also determines the available
present modes for each device, maps them to a vector, and gives
those options to the user.
OpenGL options are limited to On/Off.
Required creating a VkSurfaceKHR during device enumeration, which
may or may not be desireable. For the sake of a less confusing UI.
Also fixes a bug where if a graphics device disappears on the host, we
don't try and select the non-existant devices.
configure_graphics: Remove vsync runtime lock for Vulkan
configure_graphics: Recommend Mailbox present mode
configure_graphics: Fix type-limits warning
configure_graphics: Clean up includes
configure_graphics: Add tooltip
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