feat: add protocol for storage server

[gaius-qi]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 33.83%. Comparing base (d6b613e) to head (9de7f10).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
dragonfly-client-config/src/dfdaemon.rs	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #902      +/-   ##
==========================================
+ Coverage   33.80%   33.83%   +0.03%     
==========================================
  Files          60       60              
  Lines        9034     9040       +6     
==========================================
+ Hits         3054     3059       +5     
- Misses       5980     5981       +1     

Files with missing lines	Coverage Δ
dragonfly-client/src/resource/piece.rs	63.33% <ø> (ø)
dragonfly-client-config/src/dfdaemon.rs	49.26% <90.00%> (+0.43%)	⬆️

[chlins]

lgtm