Add custom metrics in AbstractThrottledPunctuator to track total events in eventStore and if the yield condition is hit

[Bhuvan506]

Description

have added custom metrics to the AbstractThrottledPunctuator class to monitor the size of the punctuator task queue and whether the punctuator is processing tasks efficiently.

Testing

Please describe the tests that you ran to verify your changes. Please summarize what did you test and what needs to be tested e.g. deployed and tested helm chart locally.

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

Documentation

Make sure that you have documented corresponding changes in this repository or hypertrace docs repo if required.

[codecov]

Codecov Report

❌ Patch coverage is 52.94118% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.93%. Comparing base (f555a3e) to head (424d680).
⚠️ Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...ework/punctuators/AbstractThrottledPunctuator.java	52.94%	6 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #108      +/-   ##
============================================
- Coverage     75.28%   74.93%   -0.36%     
- Complexity      241      244       +3     
============================================
  Files            44       44              
  Lines          1064     1085      +21     
  Branches         87       89       +2     
============================================
+ Hits            801      813      +12     
- Misses          228      234       +6     
- Partials         35       38       +3     

Flag	Coverage Δ
unit	74.93% <52.94%> (-0.36%)	⬇️

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