feat(dot/network): Add warp sync spam limiter

[dimartiro]

Changes

Add spam limiter for warp sync request handler.

• Introduce RateLimiter interface for our request handlers
• Use this Ratelimiter as part of the warp sync request handler
• Create SlidingWindowRateLimiter as an implementation for RateLimiter to cache requests and prevent spam
  • Tests

Open questions

• Can we solve this using the peer reputation?

Tests

go test ./dot/network

Issues

Closes: #4216

[jimjbrettj]

Looks nice, just a few comments and questions

[dimartiro]

@jimjbrettj I made some changes to simplify the implementation and turning in into a generic sliding window rate limiter. Can you take a look again please? 🙌

[jimjbrettj]

LGTM!

[EclesioMeloJunior]

Can we solve this using the peer reputation?

@dimartiro yes. You can decrease the peer reputation if you identify a spamming behavior and it will reach a point where the peer will be disconnected, however the peer still can send messages so we should but it in a block list.

Maybe we can add a layer between peer reputation and networking to avoid incoming messages from peers disconnected from bad behavior.