[v11.0.x] Docs: What’s new & Upgrade guide & Breaking changes v11.0 (#87720)

Docs: What’s new & Upgrade guide & Breaking changes v11.0 (#86369)

* Updated g11-preview pags for g11 release

* Added items to breaking changes guide

* Added and updated What's new content from latest Cloud file

* Updated link text

* Removed Azure Monitor item

(cherry picked from commit c2e8384090)

Co-authored-by: Isabel Matwawana <76437239+imatwawana@users.noreply.github.com>

docs/sources/_index.md

@@ -82,7 +82,7 @@ title: Grafana documentation
         <p>Learn how to automate your Grafana configuration.</p>
     </a>
     <a href="{{< relref "whatsnew/whats-new-in-v11-0/" >}}" class="nav-cards__item nav-cards__item--guide">
-        <h4>What's new in v11.0-preview</h4>
+        <h4>What's new in v11.0</h4>
         <p>Explore the features and enhancements in the latest release.</p>
     </a>