Refactor qrm state

[luomingmeng]

What type of PR is this?

Enhancements

What this PR does / why we need it:

To enhance scalability, we are refactoring the CPU/memory plugin state in QRM to support a read-write interface for situations where asynchronous state updates are necessary.

Which issue(s) this PR fixes:

Special notes for your reviewer:

[codecov]

Codecov Report

Attention: Patch coverage is 68.96552% with 18 lines in your changes missing coverage. Please review.

Project coverage is 55.95%. Comparing base (6b0676c) to head (2fa64f4).
Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
...agent/qrm-plugins/cpu/dynamicpolicy/state/state.go	53.84%	12 Missing ⚠️
pkg/agent/qrm-plugins/cpu/dynamicpolicy/policy.go	0.00%	2 Missing ⚠️
pkg/agent/qrm-plugins/cpu/nativepolicy/policy.go	0.00%	2 Missing ⚠️
...nt/qrm-plugins/memory/dynamicpolicy/state/state.go	92.30%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #725   +/-   ##
=======================================
  Coverage   55.95%   55.95%           
=======================================
  Files         597      597           
  Lines       67950    67983   +33     
=======================================
+ Hits        38019    38041   +22     
- Misses      25885    25900   +15     
+ Partials     4046     4042    -4     

Flag	Coverage Δ
unittest	55.95% <68.96%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

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