Stabiliize ARCamera results

[kueda]

Suggested taxa on the ARCamera disappear too quickly, making them hard to tap and hard to reliably take a photo when you get the taxon you want. There are a few ways we could address this that merit investigation / proof of concepts:

• [ ] Look into our options for controlling the frame processor FPS. If we only process one frame every 5s the suggestion will be stable for 5s, but it might also mean locking in a less-than-ideal suggestion for 5s
• [ ] Look into using the Seek approach, which might mean consulting w/ Alex or Yaron about the react-native-vision-camera implementation that involves keeping a buffer of the last N suggestions and choosing the most frequent taxon, presumably weighted by rank to favor finer ranks

[jtklein]

I believe that #1235 addresses this for iOS.

[jtklein]

This is also addressed on Android now with #1239