Add separate BasicFrame and BasicFrameWithLen implementations for C and C++

[Copilot]

• Analyze issue requirements for C and C++ BasicFrame/BasicFrameWithLen implementations
• Review current C boilerplate code (struct_frame_default_frame.h, struct_frame_types.h, etc.)
• Review current C++ boilerplate code (struct_frame.hpp, struct_frame_types.hpp, etc.)
• Understand the frame format specifications from frame_formats.proto
• Run existing tests to confirm baseline functionality
• Create separate, cleaner C boilerplate files for BasicFrame (with msg_id to length lookup)
• Create separate, cleaner C boilerplate files for BasicFrameWithLen (length in packet)
• Create matching C++ boilerplate files for BasicFrame and BasicFrameWithLen
• Add encode and decode in buffer implementations for C and C++
• Test new implementations locally
• Fix code review feedback (consistent API for reserve/finish)
• Update C tests to use new BasicFrame
• Update C++ tests to use new BasicFrame
• Update Python boilerplate with BasicFrame class
• Update Python tests to use BasicFrame
• Update TypeScript tests to use BasicFrame format
• Update JavaScript tests to use BasicFrame format
• Verify 100% cross-platform compatibility
• Run code review and CodeQL checker

Original prompt

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This section details on the original issue you should resolve

<issue_title>Review and improve the C++ and C implementations</issue_title>
<issue_description>Review the C++ and C implementations parsing and encoding implementations. They are a bit disjointed. We should ensure that that the BasicFrameWithLen and BasicFrame are implemented in both languages. The BasicFrame needs to be able to translate a list of msg_ids to msg_lengths.

The c code seems very complicated right now. It may be that we should have separate boiler plate code for the BasicFrameWithLen and BasicFrame implementations as that may simplify the implementation and make it more easy to use and understand. </issue_description>

Comments on the Issue (you are @copilot in this section)

@rijesha Ensure that each language supports the BasicFrameWithLen and BasicFrame. Only c and c++ needs to support the encode and decode in buffer implementations.

• Fixes Review and improve the C++ and C implementations #50

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[rijesha]

@copilot have the cross compatibilty test use this new BasicFrame.

[Copilot]

@copilot have the cross compatibilty test use this new BasicFrame.

Updated all cross-platform tests (C, C++, Python, TypeScript, JavaScript) to use the new BasicFrame implementation with the 2-start-byte format. The compatibility matrix now shows 100% success rate (25/25). Commit d951163.