chore(gitignore): add ds_store files

Adds .DS_Store to .gitignore to prevent unnecessary file tracking.

Author: thatkookooguy

.gitignore

@@ -140,4 +140,5 @@ vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
 .vite/
 
-.specstory/
+.specstory/
+.DS_Store