Adds hailuo-web as a new free web-cookie chat provider targeting the
MiniMax consumer chat product at hailuo.ai (chat.minimax.io), distinct
from the existing paid API-key minimax/minimax-cn providers.
Ported from the g4f reference implementation
(g4f/Provider/needs_auth/mini_max/{HailuoAI,crypt}.py):
- MD5-chain request signing (generate_yy_header/get_body_to_yy)
- Custom event:/data: SSE parsing (send_result/message_result/close_chunk),
where message_result.content is a cumulative snapshot diffed into deltas
- Device-fingerprint query params, derived deterministically per-connection
from the token when the user hasn't captured the real browser values
New catalog entry, executor, registry entry, dispatch wiring, tests
(17 cases covering signing test vectors independently verified via
Python hashlib.md5, SSE parsing, streaming/non-streaming dispatch, and
401-terminal vs 429-transient error mapping), and a regenerated
provider-translate-path golden snapshot (purely additive diff).
