feat(python): Add streaming support for large HTTP responses

[zhexuany]

Feature Request

Add streaming support to the Python HTTP client to avoid loading entire responses into memory.

Motivation

Currently, the entire HTTP response is loaded into memory. For large responses (e.g., when fetching large MCAP metadata or logs), this can cause high memory usage.

Proposed Solution

Add streaming support using requests.Response.iter_content() for sync client and aiohttp.content.iter_chunks() for async client.

Files to Modify

• python/axon_client/axon_client/client.py
• python/axon_client/axon_client/async_client.py

Priority

Medium - Nice to have for large data transfers