feat: swift package manager support

Package.swift

@@ -0,0 +1,35 @@
+// swift-tools-version:5.5
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let tag = "v0.1.0"
+let checksum = "fd9eb84a478402af8f790519a463b6e1bf6ab3987f5951cd8375afb9d39e7a4b"
+let url = "https://github.com/synonymdev/bitkit-core/releases/download/\(tag)/BitkitCore.xcframework.zip"
+
+let package = Package(
+    name: "bitkitcore",
+    platforms: [
+        .iOS(.v15),
+        .macOS(.v12),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "BitkitCore",
+            targets: ["BitkitCoreFFI", "BitkitCore"]),
+    ],
+    targets: [
+        .target(
+            name: "BitkitCore",
+            dependencies: ["BitkitCoreFFI"],
+            path: "./bindings/ios",
+            sources: ["bitkitcore.swift"]
+        ),
+        .binaryTarget(
+            name: "BitkitCoreFFI",
+            url: url,
+            checksum: checksum
+        )
+    ]
+)

build_ios.sh

@@ -89,4 +89,15 @@ echo "Cleaning up temporary directories..."
 rm -rf "bindings/ios/ios-arm64"
 rm -rf "bindings/ios/ios-arm64-sim"
 
-echo "iOS build process completed successfully!"
+# Create zip file for distribution and checksum calculation
+echo "Creating XCFramework zip file..."
+rm -f ./bindings/ios/BitkitCore.xcframework.zip
+ditto -c -k --sequesterRsrc --keepParent ./bindings/ios/BitkitCore.xcframework ./bindings/ios/BitkitCore.xcframework.zip || { echo "Failed to create zip file"; exit 1; }
+
+# Compute checksum
+echo "Computing checksum..."
+CHECKSUM=`swift package compute-checksum ./bindings/ios/BitkitCore.xcframework.zip` || { echo "Failed to compute checksum"; exit 1; }
+echo "New checksum: $CHECKSUM"
+
+echo "iOS build process completed successfully!"
+echo "Update Package.swift with the new checksum: $CHECKSUM"