Add .gitignore

.gitignore

@@ -0,0 +1,40 @@
+# Dependencies
+node_modules/
+
+# Build output
+client/dist/
+client/build/
+
+# Environment
+.env
+.env.local
+.env.production
+
+# Database
+data/
+*.db
+*.db-shm
+*.db-wal
+
+# Uploads
+uploads/
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+.DS_Store
+
+# Testing
+coverage/
+.nyc_output/
+
+# Temporary
+tmp/
+temp/