ci(CODEOWNERS): add Engineering for .vscode/tests/package.json/yarn.lock (mdn#41760)

Author: caugner

.github/CODEOWNERS

@@ -47,14 +47,20 @@
 # Issue templates in .github
 /.github/ISSUE_TEMPLATE/ff-project-issue.md @mdn/content-team
 
+# VSCode configuration
+/.vscode/              @mdn/engineering
+/.vscode/dictionaries/ @mdn/content-team
+/.vscode/cspell.json   @mdn/content-team
+
 # Root directory
 /* @mdn/engineering
 # Markdown files in root directory
 /*.md @mdn/content-team
-# Filecheck
+# Scripts and Tests
 /scripts @mdn/engineering
+/tests   @mdn/engineering
 
 # These are @mdn-bot because the auto-merge GHA workflow uses the PAT of this account.
 # If another reviewer is specified, update the PAT token or auto-merge will cease to be automatic.
-/package.json @mdn-bot
-/yarn.lock @mdn-bot
+/package.json @mdn/engineering @mdn-bot
+/yarn.lock    @mdn/engineering @mdn-bot