vkd3d: aligned fields for 64-bit platform move/copy struct optimization

[GermanAizek]

@HansKristian-Work, @doitsujin , I tried to keep context structure fields and readability. PR changes is really useful, building configuration in Release, fps increase will be very inaccurate ~5%

• vkd3d_instance_create_info (40 bytes -> 32 bytes)
• vkd3d_instance_application_meta (40 bytes -> 32 bytes)
• vkd3d_shader_transform_feedback_info (32 bytes -> 24 bytes)
• vkd3d_shader_compile_arguments (80 bytes -> 72 bytes)
• vkd3d_shader_library_subobject (64 bytes -> 56 bytes)
• vkd3d_shader_register (88 bytes -> 80 bytes)
• vkd3d_root_parameter1 (32 bytes -> 24 bytes)
• vkd3d_root_parameter (32 bytes -> 24 bytes)
• vkd3d_root_signature_desc1 (40 bytes -> 32 bytes)
• vkd3d_root_signature_desc2 (40 bytes -> 32 bytes)
• vkd3d_memory_transfer_info (56 bytes -> 48 bytes)
• vkd3d_waiting_event (48 bytes -> 40 bytes)
• pipeline (32 bytes -> 24 bytes)
• local_static_sampler (56 bytes -> 48 bytes)
• dxgi_vk_swap_chain_present_request (88 bytes -> 80 bytes)

[doitsujin]

Almost all of these are only used during initialization or when passing data to the shader compiler, there's really no reason why this would affect runtime performance in any way. We also cannot change D3D12 structures for obvious reasons, but the PR doesn't do that (anymore) despite those being mentioned in the description.

[GermanAizek]

We also cannot change D3D12 structures for obvious reasons

I tried to change them, but I didn't commit them. I forgot to delete information about changes from commit.