* Initial implementation
* Reordered prefixes, added SPEC_VERSION macro
- And added using statements to module file
* Actually add changes to .hpp and .cppm files
* Fixes for extension constexpr macros
- renamed some vars
- simplified logic and control flow
* Grouped by extension name rather than macro guards
- And added titles to all extension constexprs
* Syntax changes
- Removed the structured binding and fixed asserts
- Used C++20 functions
- Added another assert to check that extension and specversion macros exist
* Remove `std::ranges` usage
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