ci: add early arm64 builds and SwiftLint checks (#2)

scripts/verify-build.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -euo pipefail
+
+build_root="${1:?Usage: scripts/verify-build.sh /absolute/path/to/build-directory}"
+case "$build_root" in
+    /*) ;;
+    *) echo "The build directory must be an absolute path." >&2; exit 2 ;;
+esac
+
+for configuration in Debug Release; do
+    app="$build_root/DerivedData/Build/Products/$configuration/Traccar Client macOS.app"
+    executable="$app/Contents/MacOS/Traccar Client macOS"
+    echo "Verifying $configuration..."
+    test "$(lipo -archs "$executable")" = arm64
+    test "$(xcrun vtool -show-build "$executable" | awk '/minos/ {print $2}')" = 15.0
+    codesign --verify --strict "$app"
+done