New API differences for SDK 17763

[hermitdave]

Issue: #2530

PR Type

What kind of change does this PR introduce?

< - Feature >

What is the current behavior?

Adding support for UWP API version 7.0.0.0 SDK version 17763

What is the new behavior?

New differences file for v7

PR Checklist

Please check if your PR fulfills the following requirements:

• Tested code with current supported SDKs
• Docs have been added/updated which fit documentation template. (for bug fixes / features)
• Sample in sample app has been added / updated (for bug fixes / features)
  • Icon has been created (if new sample) following the Thumbnail Style Guide and templates
• Tests for the changes have been added (for bug fixes / features) (if applicable)
• Header has been added to all new source files (run build/UpdateHeaders.bat)
• Contains NO breaking changes

Other information