Background

Rather than modifying the existing web ui click tracking instrumentation to work for the search recommendations A/B test, we want to create a separate click tracking instrumentation.
This is because existing instrumentation includes alot of extra data, is configured for a specific use case, is logging to the legacy schema, and because we also need to handle search session id with the A/B test.
Having a separate instrumentation is cleaner and makes sense considering it is temporary

User story

• Add web team member we want to be able to easily analyze search A/B test events and clean up the test after

Requirements

• This instrumentation should be designed to account for all the fields in the spec
• This instrument should account for a way to send a search session id along with the events
• This instrumentation should log to the stream created in https://phabricator.wikimedia.org/T380926
• This instrumentation should listen for Hooks fired in MobileFrontend, RelatedArticles, etc (to be implemented in https://phabricator.wikimedia.org/T383358), and fire events

Acceptance criteria

• Instrumentation fires to the TBD stream

Communication criteria - does this need an announcement or discussion?

no