Feat/bytes video decode

[XiDianZuoYun]

Description

This change adds bytes-like buffer support to the on-demand video decoder GOP workflows.

Specifically, it:

• Allows SharedGopStore.put() to accept bytes, bytearray, and memoryview directly, in addition to numpy.ndarray.
• Allows GOP decode bindings such as DecodeFromGOP, DecodeFromGOPRGB, DecodeFromGOPListRGB, and DecodeFromPacketListRGB to accept generic Python bytes-like buffers via py::buffer.
• Keeps existing numpy-array based workflows compatible.

This is needed for data pipelines where video/GOP packet data is already available as raw bytes, for example from record files, mmap slices, shared-memory buffers, or custom storage backends. It avoids
requiring callers to wrap those payloads into numpy arrays before caching or decoding.

Affected components:

• accvlab.on_demand_video_decoder
• SharedGopStore
• PyNvGopDecoder Python bindings for GOP/packet decode paths

Type of Change 选这个：

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation / examples / tutorials / demos
• Supporting functionality change (fix or feature in documentation generation, helper scripts, ...)
• Refactoring / internal change
• Other (please describe):

Testing 可以写：

• Tests added or updated if/as needed
• Repository test runner executed: scripts/run_tests.sh

Added SharedGopStore tests for bytes, bytearray, memoryview, and empty byte payload validation.

Validation performed locally:

• git diff --check
• Python compile check for updated Python files
• Manual regression for bytes-like SharedGopStore.put() path
• Minimal pybind11 extension compile/import check for std::vector<py::buffer> and nested buffer-list casting

Full repository test runner was not executed because this local environment is missing pytest and the full native extension build is blocked by missing FFmpeg headers.

Documentation / Code Quality 可以填：

Documentation, Examples, Tutorials, Demos

• User-facing documentation updated if/as needed (including API docs)
• Examples / tutorials / demos updated or added (if relevant)
• Limitations and constraints documented (if relevant)
• Performance documented (if relevant)
• Documentation building successful & checks outlined in the Documentation Checks section are performed

Updated pybind API docstrings to mention bytes-like inputs. No examples or performance docs were needed.

Code Quality

• Dependencies updated in the relevant pyproject.toml if/as needed
• Code formatted according to the Code Formatting Guide

No dependency changes were required. git diff --check passed.

[XiDianZuoYun]

这里应该是unimplentmented error