[noetic] drone_wrapper_class node is not installed in the lib subdir ?

Hi,

The [drone_wrapper_class](https://github.com/JdeRobot/drones/blob/noetic-devel/drone_wrapper/src/drone_wrapper/drone_wrapper_class.py) is considered as part of the drone_wapper package

Indeed, after installation, the following works as expected :+1:
```
python3 -c "from drone_wrapper import drone_wrapper_class
```

However, the `drone_wrapper_class` is a node that is ran by the [tello_wrapper.launch](https://github.com/JdeRobot/drones/blob/noetic-devel/tello_driver/launch/tello_wrapper.launch) file but cannot be ran because althought the drone_wrapper package is installed, the node is not; :-1:

I think your CMakeLists.txt should also install the drone_wrapper_class as a node;