Added option to reload content when restoring a file.

[Avid29]

This is used to update file content when the program restarts

Fixes #32

PR Type

What kind of change does this PR introduce?

Bugfix

What is the current behavior?

When the app reopens the cached file contents are restored without checking if the file has been modified.

What is the new behavior?

When the app reopens, the cached file contents are overwritten with the contents of the file. No check is made to see if the file has been modified since the app was closed, the file contents will be reloaded. The file contents are still cached, though a file backed document will never utilize them.

Documents not backed by a file still restore cached contents

PR Checklist

Please check if your PR fulfills the following requirements:

• Created a feature/dev branch in your fork (vs. submitting directly from a commit on main)
• Based off latest dev branch of XAML Studio
• Tested code with current supported SDKs
• Tests for the changes have been added (if applicable)
• License Header has been added to all new source files
• Contains NO breaking changes to save/state files

Other information