Feature: Updated layout icons in the toolbar

[yaira2]

Resolved / Related Issues

• Were these changes approved in an issue or discussion with the project maintainers? In order to prevent extra work, feature requests and changes to the codebase must be approved before the pull request will be reviewed. This prevents extra work for the contributors and maintainers.
  For Feature: Slider to control thumbnail size #10492

Validation
How did you test these changes?

• Did you build the app and test your changes?
• Did you check for accessibility? You can use Accessibility Insights for this.
• Did you remove any strings from the en-us resource file?
  • Did you search the solution to see if the string is still being used?
• Did you implement any design changes to an existing feature?
  • Was this change approved?
• Are there any other steps that were used to validate these changes?
  1. Confirm the toolbar icon displays for each layout

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[0x5bfa]

If I were you, I'd rename them like ColorIconLayoutSizesExtraLarge28x28 Using dot is not recommended in the MSDN.

[yaira2]

If I were you, I'd rename them like ColorIconLayoutSizesExtraLarge28x28 Using dot is not recommended in the MSDN.

I'll put the size last, but using dots makes the resource names more readable and also helps filter auto complete suggestions.