add gitignore for clean space

.gitignore

@@ -0,0 +1,21 @@
+# macOS system files
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Thumbnails
+._*
+
+# Icon files
+Icon?
+
+# Editor directories and files
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Node.js / build directories (falls du Node/webpack/etc. nutzt)
+node_modules/
+dist/
+build/