♻️ [RUM-10005] Exposes addEvent instead of strategy to plugins

[thomas-lebeau]

Motivation

Refactor plugin integration to use addEvent instead of strategy. This gives plugins author the ability to better integrate with native the RUM events (e.g. click actions)

Changes

• Replace strategy object by addEvent method in plugin's onInit() method.
  • addEvent accept a subset of RumEvent as defined by rum-event-format and the domainContext to be passed to beforeSend.
  • addEvent will then send the event to the lifecycle RAW_RUM_EVENT_COLLECTED to be assembled and send.
• Use the new addEvent in the react plugin

Test instructions

• open the react-app sandbox's error boundaries test page (http://localhost:8080/react-app/test-error-boundary)
• throw and error
• look at the error in the developer extension

Additionally you can compare the error event before and after the refactor, they should be mostly identical

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.33333% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (main@0b7df17). Learn more about missing BASE report.
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/rum-react/src/domain/reactPlugin.ts	83.33%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3567   +/-   ##
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  Coverage        ?   92.45%           
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  Files           ?      323           
  Lines           ?     8134           
  Branches        ?     1838           
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  Hits            ?     7520           
  Misses          ?      614           
  Partials        ?        0           

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