Add InitJaggrabConnection packet

Signed-off-by: Graham <gpe@openrs2.org>

protocol/src/main/kotlin/org/openrs2/protocol/login/InitJaggrabConnectionCodec.kt

@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.EmptyPacketCodec
+
+public object InitJaggrabConnectionCodec : EmptyPacketCodec<LoginRequest.InitJaggrabConnection>(
+    packet = LoginRequest.InitJaggrabConnection,
+    opcode = 17
+)

protocol/src/main/kotlin/org/openrs2/protocol/login/LoginRequest.kt

@@ -4,4 +4,5 @@ import org.openrs2.protocol.Packet
 
 public sealed class LoginRequest : Packet {
     public data class InitJs5RemoteConnection(public val build: Int) : LoginRequest()
+    public object InitJaggrabConnection : LoginRequest()
 }