refactor: add dragonfly-client crate

[gaius-qi]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

[gaius-qi]

@yxxhero

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (main@2fda6c7). Click here to learn what that means.

Additional details and impacted files

@@          Coverage Diff           @@
##             main    #299   +/-   ##
======================================
  Coverage        ?   0.51%           
======================================
  Files           ?      33           
  Lines           ?    4902           
  Branches        ?       0           
======================================
  Hits            ?      25           
  Misses          ?    4877           
  Partials        ?       0           

Files	Coverage Δ
dragonfly-client/src/announcer/mod.rs	0.00% <ø> (ø)
dragonfly-client/src/bin/dfdaemon/main.rs	0.00% <ø> (ø)
dragonfly-client/src/bin/dfget/main.rs	0.00% <ø> (ø)
dragonfly-client/src/bin/dfstore/main.rs	0.00% <ø> (ø)
dragonfly-client/src/dynconfig/mod.rs	0.00% <ø> (ø)
dragonfly-client/src/gc/mod.rs	0.00% <ø> (ø)
dragonfly-client/src/grpc/dfdaemon_download.rs	0.00% <ø> (ø)
dragonfly-client/src/grpc/dfdaemon_upload.rs	0.00% <ø> (ø)
dragonfly-client/src/grpc/health.rs	11.42% <ø> (ø)
dragonfly-client/src/grpc/manager.rs	38.46% <ø> (ø)
... and 10 more