logic: Codeview Snippet order

Sorting the Snippets in. the Codeview. Active Token first then declaration,
filename and extension

src/lib/utility/FileSystem.cpp

@@ -55,3 +55,13 @@ std::string FileSystem::fileName(const std::string& path)
 {
 	return boost::filesystem::path(path).filename().generic_string();
 }
+
+std::string FileSystem::extension(const std::string& path)
+{
+	return boost::filesystem::path(path).extension().generic_string();
+}
+
+std::string FileSystem::filePathWithoutExtension(const std::string& path)
+{
+	return boost::filesystem::path(path).replace_extension().generic_string();
+}

src/lib/utility/FileSystem.h

@@ -17,6 +17,8 @@ public:
 
 	static bool exists(const std::string& path);
 	static std::string fileName(const std::string& path);
+	static std::string extension(const std::string& path);
+	static std::string filePathWithoutExtension(const std::string& path);
 
 private:
 	static bool isValidExtension(const std::string& filepath, const std::vector<std::string>& extensions);