Update .gitignore

.gitignore

@@ -0,0 +1,40 @@
+# Compiled binaries
+target/
+**/*.rs.bk
+
+# Log files
+*.log
+futriix.log
+
+# Backup files
+*.bak
+*.backup
+
+# CSV files
+*.csv
+
+# Configuration backup
+config.toml.bak
+
+# Database files
+*.db
+*.json
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS generated files
+.DS_Store
+Thumbs.db
+
+# Test files
+test_*
+temp_*
+
+# Certificate files
+certs/
+*.pem
+*.key