feat(python): support Buffer initialization and reading from stream-like objects

[ulekarsiddhant0-boop]

Motivation
Currently, the Python Buffer implementation assumes that the input data always supports the len() function. When a user tries to initialize a Buffer with a stream-like object (such as io.BytesIO), it raises a TypeError. This PR enables Buffer to handle stream-like objects and provides a method to read data from them incrementally.

Modifications
Buffer Initialization: Updated Buffer.init in buffer.pyx to check for the existence of a .read() method. If detected, it bypasses the len() check to prevent crashes with stream-like objects.

New Method read_from_stream: Added a Cython method to allow reading a specific number of bytes from a Python stream into the underlying C++ CBuffer.

Memory Safety: Implemented a mechanism to store a reference to the data chunks read from the stream (using self.data_chunk), ensuring the memory remains valid for the lifetime of the Buffer object and preventing dangling pointers in the C++ layer.

Verification
Build: Successfully verified the changes using bazel build //:serialization on Windows.

Compilation: Confirmed that Cython correctly generates the C++ source and that the MSVC compiler handles the CBuffer interface without errors.

Manual Test: Verified that io.BytesIO can now be passed to the Buffer without triggering a TypeError.

[chaokunyang]

Finished in #3307

[ulekarsiddhant0-boop]

Hi @chaokunyang ,I am currently researching the CI failures and will return with a fix shortly. In the meantime, I am starting work on the [Ruby/Lua] serialization components to broaden the project's scope. Thank you!