Added ROS catkin workspace and template ROS nodes for C++ and Python

.gitignore

LICENSE.txt

catkin_ws/src/asclinic_pkg/CMakeLists.txt

catkin_ws/src/asclinic_pkg/launch/config.sh

catkin_ws/src/asclinic_pkg/launch/template.launch

catkin_ws/src/asclinic_pkg/msg/TemplateMessage.msg

catkin_ws/src/asclinic_pkg/package.xml

catkin_ws/src/asclinic_pkg/src/nodes/template_cpp_node.cpp

.../src/asclinic_pkg/src/nodes/template_cpp_node_minimal.cpp

catkin_ws/src/asclinic_pkg/src/nodes/template_py_node.py

...ws/src/asclinic_pkg/src/nodes/template_py_node_minimal.py