Add TS, FUSE and INLINE STATS ES|QL commands and recently added functions (#3096) (#3110)

* Various fixes in the ES|QL query builder docstrings

* add TS, FUSE and INLINE STATS commands

* add new ES|QL functions

(cherry picked from commit e62eaf2)

Co-authored-by: Miguel Grinberg <miguel.grinberg@gmail.com>

Author: github-actions[bot]