testing with React, initial setup + header

.gitignore

@@ -1 +1,42 @@
-nextcloud/
+.git/
+.gitattributes
+
+.idea/
+.vscode/
+.settings/
+.classpath
+.project
+
+target/
+backend/target/
+.mvn/
+backend/.mvn/
+**/target/
+
+.DS_Store
+Thumbs.db
+
+*.pid
+*.log
+docker-compose.override.yml
+
+*.log
+*.tmp
+*.swp
+*.bak
+
+frontend/node_modules/
+frontend/dist/
+frontend/build/
+frontend/package-lock.json
+
+.env
+.env.local
+*.iml
+
+*storybook.log
+storybook-static
+
+*.mp3
+*.mp4
+*.webm