improve proj

- remove VTImage.hpp to make sure stb image do not need external project to ref.
- finish CKStateChunk write part. add some compatibilty code.
- add debugger pause function
- add filename getter for CKPathManager.

LibCmo/CK2/MgrImpls/CKPathManager.cpp

@@ -99,6 +99,14 @@ namespace LibCmo::CK2::MgrImpls {
 		return false;
 	}
 
+	void CKPathManager::GetFileName(XContainer::XString& u8path) {
+		std::filesystem::path filepath;
+		EncodingHelper::U8PathToStdPath(filepath, u8path.c_str());
+
+		auto result = filepath.filename();
+		EncodingHelper::StdPathToU8Path(u8path, result);
+	}
+
 	void CKPathManager::GetExtension(XContainer::XString& u8path) {
 		std::filesystem::path filepath;
 		EncodingHelper::U8PathToStdPath(filepath, u8path.c_str());

LibCmo/CK2/MgrImpls/CKPathManager.hpp

@@ -53,9 +53,15 @@ namespace LibCmo::CK2::MgrImpls {
 		*/
 		bool ResolveFileName(XContainer::XString& u8_filename);
 
+		/**
+		 * @brief Get file name part of given path.
+		 * @param u8path[inout] The given path. overwritten by the gotten file name.
+		*/
+		void GetFileName(XContainer::XString& u8path);
+
 		/**
 		 * @brief Returns the file extension including period (.)
-		 * @param u8path[inout] The given path. overwritten by the gotten extension. set to blank when failed.
+		 * @param u8path[inout] The given path. overwritten by the gotten extension.
 		*/
 		void GetExtension(XContainer::XString& u8path);