Tunnel: support getting runtime configuration

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

WireGuard/Shared/Model/PeerConfiguration.swift

@@ -17,6 +17,9 @@ struct PeerConfiguration {
     var allowedIPs = [IPAddressRange]()
     var endpoint: Endpoint?
     var persistentKeepAlive: UInt16?
+    var rxBytes: UInt64?
+    var txBytes: UInt64?
+    var lastHandshakeTime: Date?
 
     init(publicKey: Data) {
         self.publicKey = publicKey

WireGuard/Shared/Model/TunnelConfiguration+WgQuickConfig.swift

@@ -28,6 +28,8 @@ extension TunnelConfiguration {
         case peerHasInvalidAllowedIP(String)
         case peerHasInvalidEndpoint(String)
         case peerHasInvalidPersistentKeepAlive(String)
+        case peerHasInvalidTransferBytes(String)
+        case peerHasInvalidLastHandshakeTime(String)
         case peerHasUnrecognizedKey(String)
         case multiplePeersWithSamePublicKey
         case multipleEntriesForKey(String)