Add sunset notice for Cody Ignore (#660)

Add sunset notice for Cody Ignore.

Author: MaedahBatool

docs/cody/capabilities/ignore-context.mdx

@@ -138,7 +138,7 @@ Depending on the client type, here's a breakdown of versions supported and the b
 
 ## Cody Ignore Files
 
-<Callout type="note">Cody Ignore File functionality is available for Cody Free, Pro and Enterprise users, and is currently in the Experimental stage and only supported in the VS Code extension.</Callout>
+<Callout type="note">The Cody Ignore feature has been sunsetted and will no longer be maintained. We recommend using Cody Context Filters with Cody Enterprise for more flexible file exclusion and inclusion rules.</Callout>
 
 Cody users can configure the `.cody/ignore` file to specify files or folders from your codebase to be ignored as context by Cody through the following steps: