* Add missing file headers
And make missing file headers report a build warning in VS
Fixes#155
* add copyright comment header to all XAML files
* Apply XAML styling
* Try some initial config to enforce warnings and styles on build
Additionally run XAML Styler on pre-commit hook
* Apply XAML Styler Settings
* Add XAML Styler Check to CI Pipeline
* Apply fixes to some errors
* Run git status to understand what's being output
* Add logic for getting detached head state branch name
* Reconfigure how XAML Styler is run from the CI
Install .NET 3.1 for now to address issue with running XAML Styler
* Add error message with instruction for CI for instructing to run XAML Styler locally
Arlo
Matt Lacey
Michael Hawker MSFT (XAML Llama)