Move AJAX hookup logic to snippet

[AlexBulankou]

Currently AI JS SDK is subscribing for AJAX requests after full JS from CDN has loaded, which means that we are likely missing initial AJAX requests that are happening before first page load. Suggestion is to refactor it to move the subscribing code to snippet, which would help us miss fewer requests. Opening this issue to see if generates support feedback/support from community so we can decide how to prioritize it.

[glebteterin]

I would love this functionality to be implemented