* [DOCS] [7.x] Create a new page for grok content in scripting docs (#73118)
* [DOCS] Moving grok to its own scripting page
* Adding examples
* Updating cross link for grok page
* Adds same runtime field in a search request for #73262
* Clarify titles and shift navigation
* Incorporating review feedback
* Updating cross-link to Painless
* Adding doc type to response
