venus: add required extensions for angle support

The first 2 commits cleaned up the existing physical device features and properties

• sort EXTs with alphabetical order
• use copy assignment since we have the struct defined in the union (or we can just remove them)
• group those promoted to 1.3

The rest commits added the below extension support:

• VK_EXT_image_robustness
• VK_EXT_line_rasterization
• VK_EXT_provoking_vertex

protocol: https://gitlab.freedesktop.org/olv/venus-protocol/-/merge_requests/32

virglrenderer: virgl/virglrenderer!721 (merged)