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Code Quality: Brushed up Omnibar and BreadcrumbBar (#16973)
Code Quality: Updated headers
Code Quality: Implemented Omnibar (#16910)
Code Quality: Ran code cleanup (#17307)
Code Quality: Improved tooltip UX in BreadcrumbBar (#17277)
Code Quality: Removed ISidebarItemModel 1 (#17992)
Code Quality: Refactored StorageRing/StorageBar (#16998)
Code Quality: Add ThemedIcon gallery page to UI test app (#18411)
Code Quality: Added Slideshow Icon (#18296)