docs: refactor ai-powered insights article into four separate articles (#1862)

* Update interactivity/using-ai-powered-insights-rest-service.md

docs: make the ai-related snippets use tabs and add introductions for each of them
docs: add custom aiclient article
docs: add demo links
Update interactivity/configuring-ai-powered-insights.md
Update interactivity/custom-iclient.md

Co-Authored-By: Copilot <[email protected]>

* docs: review the articles

* chore: fix snippet formatting

* Update interactivity/configuring-ai-powered-insights.md

Co-authored-by: Yordan <[email protected]>

* Update interactivity/configuring-ai-powered-insights.md

Co-authored-by: Yordan <[email protected]>

* Update interactivity/configuring-ai-powered-insights.md

Co-authored-by: Yordan <[email protected]>

* docs: address review comments

* docs: add ff example for custom iclient

* chore: change node section

* docs: make it clearer that friendlyname/custom aiclient are interchangeable

* chore: fix unordered list

* docs: address review comments

* chore: address docs inconsistencies

---------

Co-authored-by: Copilot <[email protected]>
Co-authored-by: Yordan <[email protected]>

Author: 3 people

_config.yml

@@ -110,7 +110,7 @@ navigation:
         title: "Configuring the Output Formats"
     interactivity:
         position: 80
-        title: "Interactivity"
+        title: "Interactivity & AI"
     interactivity/bookmarks:
         position: 10
         title: "Bookmarks"