Migrate solution to '.slnx' format

Merged
SE
1y ago
+63-598

This PR migrates the solution file to '.slnx'. Also removes unnecessary CPU architectures.

PR Checklist

  • Created a feature/dev branch in your fork (vs. submitting directly from a commit on main)
  • Based off latest main branch of toolkit
  • PR doesn't include merge commits (always rebase on top of our main, if needed)
  • Tested code with current supported SDKs
  • 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
  • Every new API (including internal ones) has full XML docs
  • Code follows all style conventions