Add .gitignore

.gitignore

@@ -0,0 +1,41 @@
+
+# IDE
+.idea/
+.vscode/
+*.iml
+
+# Java / Gradle
+**/.gradle/
+**/build/
+*.class
+hs_err_pid*
+
+# Node.js / Angular
+**/node_modules/
+**/dist/
+**/.angular/
+npm-debug.log*
+yarn-debug.log*
+pnpm-debug.log*
+
+# Generated Angular bundles copied into Spring static resources
+backend/src/main/resources/static/main-*.js
+backend/src/main/resources/static/polyfills-*.js
+backend/src/main/resources/static/chunk-*.js
+backend/src/main/resources/static/styles-*.css
+
+# Operating system
+.DS_Store
+Thumbs.db
+desktop.ini
+
+# Local environment and secrets
+.env
+.env.*
+!.env.example
+*.pem
+*.key
+
+# Logs
+*.log
+logs/