feat(blink): auto-enable catppuccin integration (#4799)

## Description

Auto enable `blink_cmp` integration in catppuccin if the theme plugin is
loaded.

## Related Issue(s)

<!--
  If this PR fixes any issues, please link to the issue here.
  - Fixes #<issue_number>
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## Screenshots

**Before**

![before](https://github.com/user-attachments/assets/918d5110-fd05-4468-9259-bf7164569521)

**After**

![after](https://github.com/user-attachments/assets/0d02d0c6-2b31-41cd-8b26-fbf74a86e498)


## Checklist

- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.

lua/lazyvim/plugins/extras/coding/blink.lua

@@ -121,4 +121,12 @@ return {
       },
     },
   },
+  -- catppuccin support
+  {
+    "catppuccin",
+    optional = true,
+    opts = {
+      integrations = { blink_cmp = true },
+    },
+  },
 }