chore: add Node.js dependencies to gitignore

Add node_modules/ and package-lock.json to .gitignore to prevent
tracking of npm dependencies and lock file.

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Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -174,3 +174,9 @@ cython_debug/
 # PyPI configuration file
 .pypirc
 
+# ---> Node
+# Dependency directories
+node_modules/
+
+# npm package lock file
+package-lock.json