ci: Add iOS verification workflow. (#6992)

.github/workflows/ci.yml

@@ -245,6 +245,30 @@ jobs:
         with:
           name: ${{ env.OS }}-${{ env.TARGET }}
           path: src/android/app/artifacts/
+  ios:
+    runs-on: macos-latest
+    if: ${{ !startsWith(github.ref, 'refs/tags/') }}
+    env:
+      CCACHE_CPP2: yes
+      CCACHE_SLOPPINESS: time_macros
+      CCACHE_DIR: ${{ github.workspace }}/.ccache
+      OS: ios
+      TARGET: arm64
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+      - name: Set up cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ${{ runner.os }}-ios-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-ios-
+      - name: Install tools
+        run: brew install ccache glslang ninja
+      - name: Build
+        run: ./.ci/ios.sh
   transifex:
     runs-on: ubuntu-latest
     container: citraemu/build-environments:linux-fresh