Add code formatting job

.github/workflows/format.yml

@@ -0,0 +1,21 @@
+name: SwiftFormat
+on:
+  push:
+    branches:
+      - main
+jobs:
+  format:
+    name: SwiftFormat
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install
+        run: brew install swiftformat
+      - name: Format
+        run: make format
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Run swiftformat
+          branch: 'main'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Makefile

@@ -14,3 +14,8 @@ test:
 	xcodebuild \
 			-scheme AdaptiveCardUI_watchOS \
 			-destination '$(DESTINATION_WATCHOS)'
+
+format:
+	swiftformat .
+
+.PHONY: format

Tests/AdaptiveCardUITests/UI/ActionRenderingTests.swift

@@ -1,7 +1,7 @@
 #if os(iOS) && canImport(SwiftUI)
 
+import SwiftUI
     import SnapshotTesting
-    import SwiftUI
     import XCTest
 
     import AdaptiveCardUI