Add helper wrappers for Vulkan core 1.3 Instance and Device functions

[MarijnS95]

Depends on #563

Now the loaders are called so that fp_1_3() is available for Entry (not relevant because it's empty), Instance and Device. Also implement Rust'y wrapper functions for all new commands that are added in Vulkan 1.3.

TODO

• Implement the remaining device functions;
• Switch all documentation links to 1.3-extensions: Replace 1.2-extensions documentation links with 1.3-extensions #569;
• Perhaps Copy these functions back to the extensions that are missing right now: extensions/ext: Add VK_EXT_private_data #570, extensions/khr: Add VK_KHR_copy_commands2 #571, extensions/ext: Add VK_EXT_extended_dynamic_state2 #572;
• Wait for xml/vk: Reference underlying type instead of typedef in structextends KhronosGroup/Vulkan-Docs#1746;
• Separate PR: Improve builders to leverage our Handle trait.