chore: Add blog post announcing the official deprecation

Author: rm3l

docs/website/blog/2025-10-23-odo-deprecation-announcement.md

@@ -0,0 +1,13 @@
+---
+title: odo is deprecated
+author: The odo Team
+image: https://raw.githubusercontent.com/redhat-developer/odo/main/docs/website/static/img/logo.png
+tags: ["deprecation"]
+slug: odo-deprecation-announcement
+---
+
+📣 The `odo` project is **officially deprecated**, effective today (**Oct 23, 2025**)! 📣
+
+<!--truncate-->
+
+You can find more information and dates in "[The odo CLI is deprecated: What developers need to know](https://developers.redhat.com/articles/2025/10/23/odo-cli-deprecated-what-developers-need-know)".