* Initial build and tests setup
* Enable the `CppStdModule` test
* Snippets and generator changes
* Generated files changes
* Enable std module with macro
* Unconditionally use `import std` with C++23
* Add support for external `import std` control with `VULKAN_HPP_ENABLE_STD_MODULE`
- Rewrite `includes.hpp` and `macros.hpp`
- Unconditionally set `VULKAN_HPP_ENABLE_STD_MODULE` for `vulkan.cppm` to bug-fix
- Generated necessary files again
* Top-level CMake changes
* Reorganise logic, and propagate external macro correctly
* RAII: vulkan_hpp before ifdef
* Define `VK_USE_64_BIT_PTR_DEFINES` in `vulkan_hpp_macros.hpp`
* Generate the `VK_USE_64_BIT_PTR_DEFINES` clause from the XML instead of hardcoding it
* Refactored handling for `VK_USE_64_BIT_PTR_DEFINES`
- Updated condition to positive test for `#ifndef VK_USE_64_BIT_PTR_DEFINES` in `completeMacro`
* Added `#include <string.h>` to resolve `strnlen` missing in the module
* Use only `std.compat`
* FIx after rebase
