Add TcpRpc server and client and split crypto code into multiple classes

Networking/AesPacketCrypto.cs

@@ -0,0 +1,16 @@
+using RemSox.Utils;
+
+namespace RemSox.Networking;
+
+internal class AesPacketCrypto(byte[] key) : IPacketCrypto
+{
+    public byte[] Decrypt(byte[] data)
+    {
+        return AesGcmCrypto.Decrypt(data, key);
+    }
+
+    public byte[] Encrypt(byte[] data)
+    {
+        return AesGcmCrypto.Encrypt(data, key);
+    }
+}