metrics(qrm): mbm throttle metrics

[h-w-chen]

What type of PR is this?

Enhancements - metrics

What this PR does / why we need it:

To have metrics that indicate which are being throttled with their mem bandwidth by qrm-mb-plugin.
the metrics it emits:

2 metrics introduced:

• name: katalyst.mbm_ccd_suppressed
  tags:
  • domain ID (numa id)
  • resctrl group name
  • ccd id
  • suppression type: domain_stress, ccd_limit
• name: katalyst.mbm_load_suppressed
  tags:
  • namespace
  • pod_name
  • psm
  • suppression type

[codecov]

Codecov Report

❌ Patch coverage is 56.80751% with 92 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.80%. Comparing base (d64650b) to head (4720aee).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/agent/qrm-plugins/mb/policy/plugin.go	45.83%	51 Missing and 1 partial ⚠️
...g/agent/qrm-plugins/mb/advisor/priority_advisor.go	57.62%	23 Missing and 2 partials ⚠️
...nt/qrm-plugins/mb/advisor/uniq_priority_advisor.go	66.66%	5 Missing and 5 partials ⚠️
...gent/qrm-plugins/mb/advisor/pcontroller_advisor.go	82.14%	3 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1159      +/-   ##
==========================================
- Coverage   61.88%   61.80%   -0.08%     
==========================================
  Files         791      791              
  Lines       74791    75096     +305     
==========================================
+ Hits        46283    46415     +132     
- Misses      23445    23591     +146     
- Partials     5063     5090      +27     

Flag	Coverage Δ
unittest	61.80% <56.80%> (-0.08%)	⬇️

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