* vita3k: Use C++17 nested namespace definition
* vita3k: Remove redundant call to c_str()
* vita3k: Prefer C++ header
* vita3k: Use structured bindings
* shader: Add explicit fallthrough
* vita3k: Cleanup headers and dependencies
* util: Add WIN32_LEAN_AND_MEAN before <Windows.h>
* modules: Remove redundant 'const' specifier on a constexpr variable
* modules: Remove redundant return statement at the end of a function with a void return type
* clang-format: Use C++20 standard
* vita3k: Insert new line at EOF
* host: rename filesystem.hpp to filesystem.h
