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 84.21053% with 3 lines in your changes missing coverage. Please review.

Project coverage is 73.59%. Comparing base (b79444f) to head (2b27e81).
Report is 19 commits behind head on feat.reports-bactching.

Files with missing lines	Patch %	Lines
enterprise/reporting/reporting.go	84.21%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@                    Coverage Diff                     @@
##           feat.reports-bactching    #5326      +/-   ##
==========================================================
+ Coverage                   73.21%   73.59%   +0.37%     
==========================================================
  Files                         423      424       +1     
  Lines                       59908    59952      +44     
==========================================================
+ Hits                        43863    44119     +256     
+ Misses                      13584    13364     -220     
- Partials                     2461     2469       +8     

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