Build a configurable API rate limiter middleware for Express/Hono

Create a rate limiting middleware package that supports multiple strategies: fixed window, sliding window, and token bucket. Should work with both Express and Hono frameworks. Support Redis and in-memory backends. Include per-route, per-user, and per-IP limiting with configurable windows.

Requirements

Acceptance Criteria

[
  "Middleware works with both Express.js and Hono frameworks via adapter pattern",
  "Implements at least 3 strategies: fixed window, sliding window, and token bucket",
  "Supports Redis backend (ioredis) and in-memory fallback with automatic detection",
  "Per-route configuration via options object with sensible defaults (100 req/min per IP)",
  "Returns proper 429 responses with Retry-After header and X-RateLimit-* headers",
  "15+ unit tests covering all strategies, both backends, and edge cases (concurrent requests, window expiry)",
  "README with usage examples for both Express and Hono, including Redis setup"
]

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