[Task]: Add GA4 tracking for search Click-through-rate to the opportunity listing

[btabaska]

Summary

Click-through-rate to the opportunity listing on grants.gov to measure the search accuracy for those top searched terms: this is to measure the metric: Click-through-rate to the opportunity listing on grants.gov to measure the search accuracy for those top searched terms; Aaron suggested possibly putting a # for each result? Might need to be a spike first

Acceptance criteria

Click-through-rate to the opportunity listing on grants.gov to measure the search accuracy for those top searched terms