chore: collect stats for reporting event sampler

[vamsikrishnakandi]

Description

collect stats for reporting event sampler

Linear Ticket

Part of OBS-461

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Attention: Patch coverage is 93.61702% with 3 lines in your changes missing coverage. Please review.

Project coverage is 74.74%. Comparing base (78fb917) to head (169bba2).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
enterprise/reporting/error_reporting.go	0.00%	1 Missing ⚠️
...nterprise/reporting/event_sampler/event_sampler.go	66.66%	1 Missing ⚠️
enterprise/reporting/reporting.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5357      +/-   ##
==========================================
- Coverage   74.76%   74.74%   -0.03%     
==========================================
  Files         438      439       +1     
  Lines       61339    61378      +39     
==========================================
+ Hits        45862    45875      +13     
- Misses      12935    12955      +20     
- Partials     2542     2548       +6     

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