feat: add Rust consumer SDK for Pyth Lazer with redundant connections

[devin-ai-integration]

feat: add Rust consumer SDK for Pyth Lazer with redundant connections

Implements a Rust consumer SDK for Pyth Lazer with the following features:

• Multiple parallel WebSocket connections with round-robin URL selection
• Message deduplication with TTL cache
• Exponential backoff with jitter for reconnections
• Automatic resubscription after reconnection
• Support for both JSON and binary message formats
• Comprehensive test coverage

Based on the existing JavaScript SDK implementation and RedundantBinanceStream approach.

Link to Devin run: https://app.devin.ai/sessions/8d970f055e4343078d8728bee2d3273f

[devin-ai-integration]

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