added "jal" command

src/Manager.cpp

@@ -40,6 +40,10 @@ void Manager::setStreamPosition(const std::streampos pos) {
     m_programFile.seekg(pos);
 }
 
+std::streampos Manager::getStreamPosition() {
+    return m_programFile.tellg();
+}
+
 void Manager::init(const std::string &program_path) {
     m_path = program_path;
     std::cout << "Öffne Quellcode Datei: '" << m_path << "'" << "\n" << std::flush;