Migrate Algolia Insights off of Hive (possibly onto ObjectBox)

Hive hasn't been updated 3.5 years. algolia_insights package still uses it but because Hive requires an older version of build_runner, as projects progress to use newer Flutter and Dart versions, soon they will be bottlenecked by algolia_insights dependency on Hive.

Please consider moving to ObjectBox, still object-based storage and maintained frequently for ios, android and web.

Start by auditing the algolia_insights package's current Hive dependency and its Flutter and Dart compatibility constraints. Compare the stated ObjectBox option for iOS, Android, and web; the work is done when the package no longer depends on Hive and remains compatible with supported Flutter and Dart versions.

Written by the indexing model from the issue text.