Move UIKit backend to winit-uikit

.github/CODEOWNERS

@@ -2,7 +2,7 @@
 /winit-android                      @MarijnS95
 
 # Apple (AppKit + UIKit)
-/src/platform/ios.rs                @madsmtm
+/winit-uikit                        @madsmtm
 /src/platform/macos.rs              @madsmtm
 /src/platform_impl/apple            @madsmtm
 /winit-common/src/core_foundation   @madsmtm

.github/workflows/ci.yml

@@ -201,6 +201,11 @@ jobs:
       if: contains(matrix.platform.target, 'redox')
       run: cargo test -p winit-orbital
 
+    - name: Test winit UIKit
+      if: contains(matrix.platform.target, 'ios')
+      # TODO: Run on Simulator
+      run: cargo $CMD test -p winit-uikit --target=${{ matrix.platform.target }} --no-run
+
     - name: Test winit Win32
       if: contains(matrix.platform.target, 'windows')
       run: cargo $CMD test -p winit-win32 --target=${{ matrix.platform.target }}