check node version at start of flynt create

[emcarru]

The node version is only checked half way through flynt create (I believe, when it reaches the installYarn task) meaning if you have the wrong version, you have to manually run the remaining steps manually.

[bdbch]

Yeah this is annoying haha. I almost freaked out when I wanted to create a new project and because of the Windows magic I had some issues which I had to resolve first (mysql host, node version, etc.) and everytime the create process failed, I had to restart again and re-enter all of my data in the cli prompt.

Maybe there could be a way to save the current state of the installation when the create/setup step fails so you can just continue the setup via some command (for example flynt continue.