Add tutorial on how to set up Linux C and C++ header files in Visual Studio 2017

[tommai78101]

Steps on how to enable this from a completely brand new WSL installation.

1. Run WSL.
2. Enter credentials.
3. Press Enter just a few times until you see your username.
4. $ sudo apt install -y build-essentials
5. $ sudo apt install -y gdbserver
6. $ sudo apt install -y openssh-server
7. $ sudo nano /etc/ssh/sshd_config
8. Note the number next to "Port"
9. Set the option next to "PasswordAuthentication" to "yes"
10. CTRL+O to save.
11. CTRL+X to quit.
12. $ sudo service ssh force-reload
13. $ sudo ssh-keygen -A
14. $ sudo service ssh start
15. We need to test the connection.
16. $ ssh [your username]@localhost -p [enter the "Port" number]
17. If it requests for your password, the connection is successful. If connection is refused, some other application is blocking the port.
18. Change port number in sshd_config if connection is refused. Repeat from Step 12.
19. We exit the ssh session.
20. $ exit
21. Do all the steps in this article, from the top of this article
    https://blogs.msdn.microsoft.com/vcblog/2017/02/08/targeting-windows-subsystem-for-linux-from-visual-studio/
22. Explore the downloaded Linux C and C++ header files.
23. Copy the path to the includes directory.
24. Add them to the project configuration pages > VC++ Directories > Includes
25. Let IntelliSense finish.

Sources:

• https://blogs.msdn.microsoft.com/vcblog/2017/02/08/targeting-windows-subsystem-for-linux-from-visual-studio/
• https://askubuntu.com/questions/673597/ssh-connect-to-host-127-0-0-1-port-2222-connection-refused
• https://superuser.com/questions/467398/how-do-i-exit-a-ssh-connection