* Search: Fixes search limits and adds a page parameter
This adds a page parameter to search api without adding
any major breaking change.
It does at an api validation error when trying to use
a limit beyond 5000. This is a breaking change. We could
remove this and have it only in the docs and describe that this
is a limit that grafana will apply silently.
Fixes #16049
* Fix: Corrected wrong array slice change
* Docs: minor docs fix
* Search: fixed folder tests
* Fixed: Moved limit to correct inner query
* Search: moving limit check and page check
* Search: limit in handler is no longer needed
