feat: add rotating log option

Author: qudix

include/SKSE/API.h

@@ -22,6 +22,7 @@ namespace SKSE
 #endif
 		const char* logName{ nullptr };
 		const char* logPattern{ nullptr };
+		std::size_t logRotate{ 0 };
 		bool        trampoline{ false };
 		std::size_t trampolineSize{ 0 };
 		bool        hook{ true };

src/SKSE/API.cpp

@@ -5,6 +5,7 @@
 
 #include <spdlog/sinks/basic_file_sink.h>
 #include <spdlog/sinks/msvc_sink.h>
+#include <spdlog/sinks/rotating_file_sink.h>
 #include <spdlog/spdlog.h>
 
 namespace SKSE
@@ -99,10 +100,16 @@ namespace SKSE
 					*path /= std::format("{}.log", info.logName ? info.logName : SKSE::GetPluginName());
 
 					std::vector<spdlog::sink_ptr> sinks{
-						std::make_shared<spdlog::sinks::basic_file_sink_mt>(path->string(), true),
 						std::make_shared<spdlog::sinks::msvc_sink_mt>()
 					};
 
+					if (info.logRotate > 0) {
+						constexpr auto maxSize = std::numeric_limits<std::size_t>::max();
+						sinks.push_back(std::make_shared<spdlog::sinks::rotating_file_sink_mt>(path->string(), maxSize, info.logRotate, true));
+					} else {
+						sinks.push_back(std::make_shared<spdlog::sinks::basic_file_sink_mt>(path->string(), true));
+					}
+
 					auto logger = std::make_shared<spdlog::logger>("global", sinks.begin(), sinks.end());
 					logger->set_level(static_cast<spdlog::level::level_enum>(info.logLevel));
 					logger->flush_on(static_cast<spdlog::level::level_enum>(info.logLevel));