Add command interface, add shutdown command

[pool2win]

No description provided.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 93.61702% with 3 lines in your changes missing coverage. Please review.

Project coverage is 87.47%. Comparing base (96bcb02) to head (176a920).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main.rs	0.00%	2 Missing ⚠️
src/node.rs	94.44%	1 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
+ Coverage   87.26%   87.47%   +0.20%     
==========================================
  Files          19       20       +1     
  Lines        2325     2363      +38     
==========================================
+ Hits         2029     2067      +38     
  Misses        296      296              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pool2win]

Duplicated.