Move all source files to Sources/ and rename WireGuardKit targets

Signed-off-by: Andrej Mihajlov <and@mullvad.net>

Sources/WireGuardKitSwift/IPAddress+AddrInfo.swift

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
+
+import Foundation
+import Network
+
+extension IPv4Address {
+    init?(addrInfo: addrinfo) {
+        guard addrInfo.ai_family == AF_INET else { return nil }
+
+        let addressData = addrInfo.ai_addr.withMemoryRebound(to: sockaddr_in.self, capacity: MemoryLayout<sockaddr_in>.size) { (ptr) -> Data in
+            return Data(bytes: &ptr.pointee.sin_addr, count: MemoryLayout<in_addr>.size)
+        }
+
+        if let ipAddress = IPv4Address(addressData) {
+            self = ipAddress
+        } else {
+            return nil
+        }
+    }
+}
+
+extension IPv6Address {
+    init?(addrInfo: addrinfo) {
+        guard addrInfo.ai_family == AF_INET6 else { return nil }
+
+        let addressData = addrInfo.ai_addr.withMemoryRebound(to: sockaddr_in6.self, capacity: MemoryLayout<sockaddr_in6>.size) { (ptr) -> Data in
+            return Data(bytes: &ptr.pointee.sin6_addr, count: MemoryLayout<in6_addr>.size)
+        }
+
+        if let ipAddress = IPv6Address(addressData) {
+            self = ipAddress
+        } else {
+            return nil
+        }
+    }
+}