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