ui: Separated QtCodeSnippet and added QtCodeFile to display filename

src/lib/utility/FileSystem.cpp

@@ -44,3 +44,7 @@ bool FileSystem::exists(const std::string& path)
 	return boost::filesystem::exists(boost::filesystem::path(path));
 }
 
+std::string FileSystem::fileName(const std::string& path)
+{
+	return boost::filesystem::path(path).filename().generic_string();
+}

src/lib/utility/FileSystem.h

@@ -11,6 +11,8 @@ public:
 		const std::string& path, const std::vector<std::string>& extensions
 	);
 	static bool exists(const std::string& path);
+	static std::string fileName(const std::string& path);
+
 private:
 	static bool isValidExtension(const std::string& filepath, const std::vector<std::string>& extensions);
 };