COCOS-364 - Make agent more resilient to gRPC disconnection on cvms cloud server

[SammyOina]

What type of PR is this?

What does this do?

• New Features
  • Enhanced state tracking with improved logging, metrics, and state exchange.
  • Added robust reconnection and pending message handling for improved client reliability.
• Refactor
  • Streamlined server startup to run asynchronously.
  • Updated client initialization and testing setups.
• Chores
  • Updated dependency versions and configuration settings for enhanced compatibility.

Which issue(s) does this PR fix/relate to?

• Resolves Bug: Agent connection to cvms server does not persist #364
• Resolves Feature: Report agent state to cloud #374

Have you included tests for your changes?

Did you document any new/modified feature?

Notes

[codecov]

Codecov Report

Attention: Patch coverage is 43.63636% with 62 lines in your changes missing coverage. Please review.

Project coverage is 59.11%. Comparing base (bb0ad29) to head (b11c880).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
agent/cvms/api/grpc/client.go	47.47%	43 Missing and 9 partials ⚠️
agent/cvms/server/cvm.go	0.00%	8 Missing ⚠️
agent/service.go	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #375      +/-   ##
==========================================
- Coverage   59.57%   59.11%   -0.46%     
==========================================
  Files          54       55       +1     
  Lines        4574     4667      +93     
==========================================
+ Hits         2725     2759      +34     
- Misses       1564     1615      +51     
- Partials      285      293       +8     

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