fix(network): Adds ConnectUO (#551)

- [X] Adds ability to create new protocol extension packets
- [X] Adds freeshard protocol extension support (packet 0xF1)
- [X] Adds ConnectUO support
- [X] Adds arbitrary read for `CircularBufferReader` and `SpanReader`

Projects/UOContent/Accounting/Security/PBKDF2PasswordProtection.cs

@@ -46,7 +46,7 @@ namespace Server.Accounting.Security
         public bool ValidatePassword(string encryptedPassword, string plainPassword)
         {
             Span<byte> encryptedBytes = stackalloc byte[m_OutputSize];
-            HexStringConverter.GetBytes(encryptedPassword, encryptedBytes);
+            encryptedPassword.GetBytes(encryptedBytes);
 
             var iterations = BinaryPrimitives.ReadUInt16LittleEndian(encryptedBytes.SliceToLength(2));
             var salt = encryptedBytes.Slice(2, m_SaltSize);