feat(deployment): Make serialization optional in FHEModelServer.run

[DeVikingMark]

Add force_serialization parameter to FHEModelServer.run method to make
serialization/deserialization optional. This allows for better performance
in cases where serialization is not needed.

• Add force_serialization parameter with default value False
• Update method documentation
• Modify serialization logic to consider both input state and force_serialization flag
• Remove TODO comment as the functionality is now implemented

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[andrei-stoian-zama]

Thank you for the PR!

Could you elaborate in which cases the serialization would not be needed? Would it be in the case when Client / Server run on the same machine ?

[DeVikingMark]

Thank you for the PR!

Could you elaborate in which cases the serialization would not be needed? Would it be in the case when Client / Server run on the same machine ?

@andrei-stoian-zama

Yes, serialization isn't needed when Client and Server run on the same machine. I noticed that in local scenarios, the code was performing unnecessary serialization/deserialization operations that could be optimized.

In such cases, we can just pass fhe.Value objects directly, which is noticeably faster. This is especially useful during:

• local development and testing
• debugging
• running all components in a single process

That's why I added the force_serialization parameter - it helps optimize performance in these scenarios while maintaining backwards compatibility for distributed systems. Thanks for asking!