Remove accidentally committed package-lock.json, add to .gitignore

Co-authored-by: NullVoxPopuli <[email protected]>

Author: Copilot

.gitignore

@@ -14,3 +14,6 @@ npm-debug.log
 
 # eslint-remote-tester
 eslint-remote-tester-results
+
+# npm lock file (project uses pnpm)
+package-lock.json