feat: aggregate reports based on the configured interval before sending to reporting

[itsmihir]

Description

Currently, the Rudder Server aggregates reports every minute and then flushes them to the Reporting Service. We want to make the aggregation interval configurable, allowing reports to be aggregated over a specified time period, such as 2 minutes instead of the default 1 minute.

Linear Ticket

https://linear.app/rudderstack/issue/OBS-415/support-aggregation-time-as-a-configuration-on-rudder-server-ability

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 91.42857% with 3 lines in your changes missing coverage. Please review.

Project coverage is 74.74%. Comparing base (8bbb818) to head (11ee199).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
enterprise/reporting/reporting.go	91.42%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5326      +/-   ##
==========================================
- Coverage   74.76%   74.74%   -0.03%     
==========================================
  Files         433      433              
  Lines       60951    60979      +28     
==========================================
+ Hits        45573    45581       +8     
- Misses      12849    12863      +14     
- Partials     2529     2535       +6     

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[mihir20]

LGTM