feat: add notice board for realtimekit (#27012)

* feat: add broadcast message api docs [skip style guide checks]

* feat: add notice board for realtimekit

* fix: add rss to noticeboard

* Apply suggestions from code review

Co-authored-by: Swapnil Madavi <30936566+swapnilmadavi@users.noreply.github.com>

* fix: revert broadcast api changes

* fix: sidebar order

---------

Co-authored-by: Swapnil Madavi <30936566+swapnilmadavi@users.noreply.github.com>

Author: ishita1805

src/content/docs/realtime/realtimekit/legal/index.mdx

@@ -3,10 +3,9 @@ pcx_content_type: navigation
 title: Legal
 hideChildren: true
 sidebar:
-  order: 10
-
+  order: 12
 ---
 
-* [Privacy Policy](https://www.cloudflare.com/application/privacypolicy/)
-* [Application Terms of Service](https://www.cloudflare.com/application/terms/)
-* [Third party licenses](/realtime/realtimekit/legal/3rdparty/)
+- [Privacy Policy](https://www.cloudflare.com/application/privacypolicy/)
+- [Application Terms of Service](https://www.cloudflare.com/application/terms/)
+- [Third party licenses](/realtime/realtimekit/legal/3rdparty/)

src/content/docs/realtime/realtimekit/release-notes/notice-board.mdx

@@ -0,0 +1,13 @@
+---
+pcx_content_type: changelog
+title: Notices
+release_notes_file_name:
+  - realtimekit
+release_notes_name: RealtimeKit
+sidebar:
+  order: 3
+---
+
+import { ProductReleaseNotes } from "~/components";
+
+<ProductReleaseNotes />

src/content/docs/realtime/realtimekit/rest-api-reference.mdx

@@ -8,4 +8,4 @@ sidebar:
   badge:
     text: API
     variant: note
----
+---

src/content/release-notes/realtimekit.yaml

@@ -0,0 +1,22 @@
+---
+link: "/realtime/realtimekit/notice-board/"
+productName: RealtimeKit
+productLink: "/realtime/realtimekit"
+entries:
+  - publish_date: "2025-03-01"
+    title: Support for legacy media engine has been removed
+    description: |-
+      Legacy media engine support has been removed. 
+
+      If your organization was created before March 1, 2025 and you are upgrading to `1.2.0` or above, you may experience recording issues.
+
+      Please contact support to migrate you to the new Cloudflare SFU media engine to ensure continued recording functionality.
+      
+  - publish_date: "2025-11-21"
+    title: Update on meeting join issues in firefox 144+
+    description: |-
+      In firefox 144+, users were not able to join the meetings, due to the browser's datachannel behavior change.
+
+      Error: `x.data.arrayBuffer is not a function`
+
+      Please upgrade to atleast `v1.2.0` to fix this. It is advised to periodically upgrade the SDKs.