Implemented protobuf messages encoding functionality

[NeerajGartia21]

This is a follow-up PR of #82 .

The proposed design for put operation in application/x-protostream mediatype is as follows:

1. register the protobuf schema using the registerProtostream function i.e. client.registerProtostreamType('.awesomepackage.AwesomeMessages',1000042);
2. Encode the message object using the protobuf schema. i.e var encoded=root.encode(message)
3. call the put method by providing the encoded message object as the argument. i.e. client.put(encoded)

PUT operation on the client can be used by following above steps.

In this PR the functionality of the PUT operation is added. So now PUT operation can be used using application/x-protostream as mediatype.

Next task

1. Implement decodeProtobuf for GET operation.
2. Add unit tests for the new features.

[rigazilla]

@NeerajGartia21 I've added some more commits:

• some fixes for hotrod encode bytes: length must be sent before the buffer
• fix in WrappedMessage field population
• added protostream encoded cache and tests

Hey! encoding seems to work very well! Awesome!

if it looks good to you I can merge all this into main

[NeerajGartia21]

It looks fine to me.

[rigazilla]

merged, thanks @NeerajGartia21 !

[NeerajGartia21]

Thanks @rigazilla .