feat: set max of the RateLimiter to the rate limit in config

[gaius-qi]

Description

This pull request includes modifications to the rate limiter configuration in the dragonfly-client/src/resource/piece.rs file. The changes aim to make the rate limiter's maximum value configurable based on the provided configuration rather than using hardcoded constants.

Rate limiter configuration changes:

• Updated the download rate limiter to use config.download.rate_limit for the maximum value instead of hardcoded constants.
• Updated the upload rate limiter to use config.upload.rate_limit for the maximum value instead of hardcoded constants.
• Updated the proxy prefetch rate limiter to use config.proxy.prefetch_rate_limit for the maximum value instead of hardcoded constants.

Related Issue

Motivation and Context

Screenshots (if appropriate)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 33.19%. Comparing base (40264df) to head (bcc1c69).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #966   +/-   ##
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  Coverage   33.19%   33.19%           
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  Files          59       59           
  Lines        9638     9638           
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  Hits         3199     3199           
  Misses       6439     6439           

Files with missing lines	Coverage Δ
dragonfly-client/src/resource/piece.rs	55.51% <ø> (ø)