Function manually_preprocess_header

tools/src/steamworks_parser.cpp:135–143

* Certain Steam macros break C++ AST parser, if left unprocessed. * This function preprocesses them in a very naive manner. Stupid, but works. */

     * This function preprocesses them in a very naive manner. Stupid, but works.
     */
    std::string manually_preprocess_header(const fs::path& header_path) {
        const auto header_contents = kb::io::read_file(header_path);

        // language=RegExp
        const std::regex re(R"(STEAM_PRIVATE_API\s*\(\s*([^)]+)\s*\))");
        const auto processed_contents = std::regex_replace(header_contents, re, "$1");

        return processed_contents;
    }

    void parse_sdk(const fs::path& sdk_path, nlohmann::ordered_json& lookup, BS::thread_pool<>& pool) {
        const auto headers_dir = sdk_path / "headers" / "steam";