I worked through this video Build Great Windows Desktop Apps with Flutter - Setup, Configure, Distribute by @codetricity.
Just Running an Executable
First, I tested using a standalone Flutter app for Windows. I loaded it on my Dell XPS 13 7390 running Windows 10. I got it as a zip file and unzipped it.
In order to test it, I have to connect my laptop to my Z1. I double click the executable. It works on the first try.
I can run the info command, find state, take a picture, and more. It shows the battery level both numerically (in the title) and with an icon (far right).
Running Flutter on Windows for Development
Following the video, I check to make sure to see if my Flutter channel is on dev. It is!
I need to have Visual Studio - not Visual Studio Code - installed. I do!
And I installed the Desktop Development with C++ along with Visual Studio. So far, so good.
I enable for Windows desktop. And when I do flutter run -d windows, it runs!
That’s me with a thumbs up in the picture. 
Small detail: I notice that @codetricity was able to run flutter with a different order in the command, but both seem to work
@codetricity: flutter -d windows run
Me: flutter run -d windows
I’m going to start adding buttons and some new functionality to the app. I’ll post again soon. Examples already exist in the Flutter code using multiple different API commands to control the camera, I’m expecting the first steps to be straightforward. If anyone else wants to try, the video at the top is a good starting point.