chore(quiz): add .gitignore and untrack node_modules and .next

cc4e-course/quiz-project/.gitignore

@@ -0,0 +1,18 @@
+# dependencies
+node_modules/
+
+# next.js
+.next/
+out/
+
+# env files
+.env
+.env.local
+.env.*.local
+
+# debug
+npm-debug.log*
+
+# misc
+.DS_Store
+*.pem