feat: Generic Event Handler Feature - Marks & Measures

[metal-messiah]

Please add a one-paragraph summary here, suitable for a release notes description. This will help with documentation.

Overview

This PR introduces a generic event handlers as a feature, which expects event emitter messages, and uses them to merge events into a single payload and handles harvesting.

Related Issue(s)

https://whimsical.com/generic-event-handler-UAsH8LjzKvTndQnYLC6ftc

Testing

[github-actions]

Asset Size Report

Merging this pull request will result in the following asset size changes:

Agent	Asset	Previous Size	New Size	Diff
lite	loader	31.44 kB / 11.03 kB (gzip)	31.51 kB / 11.07 kB (gzip)	0.22% / 0.32% (gzip)
lite	async-chunk	50.96 kB / 16.57 kB (gzip)	51.63 kB / 16.73 kB (gzip)	1.3% / 0.97% (gzip)
pro	loader	52.7 kB / 17.87 kB (gzip)	52.77 kB / 17.9 kB (gzip)	0.13% / 0.18% (gzip)
pro	async-chunk	93.45 kB / 28.21 kB (gzip)	94.87 kB / 28.6 kB (gzip)	1.52% / 1.38% (gzip)
spa	loader	60.81 kB / 20.37 kB (gzip)	60.88 kB / 20.41 kB (gzip)	0.12% / 0.19% (gzip)
spa	async-chunk	108.72 kB / 32.63 kB (gzip)	110.13 kB / 33.02 kB (gzip)	1.3% / 1.19% (gzip)
lite-polyfills	loader	125.44 kB / 40.32 kB (gzip)	125.51 kB / 40.36 kB (gzip)	0.06% / 0.1% (gzip)
lite-polyfills	async-chunk	65.7 kB / 18.91 kB (gzip)	67.72 kB / 19.27 kB (gzip)	3.07% / 1.94% (gzip)
pro-polyfills	loader	147.15 kB / 46.58 kB (gzip)	147.22 kB / 46.63 kB (gzip)	0.05% / 0.12% (gzip)
pro-polyfills	async-chunk	113.96 kB / 30.15 kB (gzip)	118.29 kB / 31.09 kB (gzip)	3.8% / 3.12% (gzip)
spa-polyfills	loader	155.35 kB / 48.75 kB (gzip)	155.42 kB / 48.79 kB (gzip)	0.05% / 0.08% (gzip)
spa-polyfills	async-chunk	130.96 kB / 34.78 kB (gzip)	135.29 kB / 35.73 kB (gzip)	3.31% / 2.71% (gzip)

[codecov]

Codecov Report

Attention: Patch coverage is 15.11628% with 73 lines in your changes are missing coverage. Please review.

Project coverage is 86.68%. Comparing base (ff94cc2) to head (8cbb1eb).
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/features/generic_event/aggregate/index.js	0.00%	37 Missing and 13 partials ⚠️
src/common/generic-events/marks-and-measures.js	0.00%	13 Missing and 1 partial ⚠️
src/common/generic-events/event-messenger.js	35.71%	7 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #852      +/-   ##
==========================================
- Coverage   87.38%   86.68%   -0.70%     
==========================================
  Files         156      159       +3     
  Lines        7100     7163      +63     
  Branches     1394     1409      +15     
==========================================
+ Hits         6204     6209       +5     
- Misses        779      824      +45     
- Partials      117      130      +13     

Flag	Coverage Δ
unit-tests	75.63% <15.11%> (-0.34%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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