Make Zeno to be signalable by HQ via websocket

[yzqzss]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 55 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.28%. Comparing base (c8a6c40) to head (2ac2f9e).

Files with missing lines	Patch %	Lines
internal/pkg/source/hq/websocket.go	0.00%	55 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #429      +/-   ##
==========================================
- Coverage   54.69%   54.28%   -0.41%     
==========================================
  Files         120      120              
  Lines        7345     7400      +55     
==========================================
  Hits         4017     4017              
- Misses       3004     3059      +55     
  Partials      324      324              

Flag	Coverage Δ
e2etests	36.89% <0.00%> (-0.28%)	⬇️
unittests	30.66% <0.00%> (-0.24%)	⬇️

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[Copilot]

Pull Request Overview

This PR adds websocket message handling capabilities to Zeno, allowing it to receive and process signals from HQ. The implementation enables HQ to remotely control Zeno processes by sending signal commands through the websocket connection.

• Adds a new message listening goroutine that processes incoming websocket messages
• Implements message dispatching based on message type with initial support for "signal" messages
• Adds signal handling functionality that allows sending Unix signals to the current process

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[NGTmeaty]

Some quick comments - and a question - if the HQ implementation does not support websocket are we going to panic or continue trying to connect?

[yzqzss]

if the HQ implementation does not support websocket are we going to panic or continue trying to connect?

if so, the hq client will fail to initialize.

[NGTmeaty]

Thanks!!