* Better CLI parsing, command
Added the option to run a command via the CLI.
Also added a better argument parsing solution.
You can now do `flute.exe new [PATH] [COMMAND]`
Before, you could only do `flute.exe new [PATH]`
You would also need to adjust your settings, say your default profile is using powershell with custom arguments, those arguments would have to end with ";", because the `[COMMAND]` would be appended to the arguments.
* parse arguments with commandlineparser nuget
* Run commands with no underlying shell process
* Create RunVerb, cleanup terminal creation
* Fix window close bug
* Use working directory of caller if none specified
* Restore profile arguments in WinPty
