Initial commit: Certificate management tools

- cert-manager.py: Interactive certificate lifecycle management
- generate-csr.sh: Generate CSR on remote host
- sign-cert.sh: Sign certificate with UCS CA
- README.md: Complete documentation
- .gitignore: Ignore certificate and config files

Features:
- Interactive prompts with default values
- Config persistence between runs
- Remote CSR generation with proper server extensions
- Automated CA signing
- Optional certificate deployment

.gitignore

@@ -0,0 +1,26 @@
+# Certificate files
+*.req
+*.csr
+*.pem
+*.crt
+*.key
+
+# Python cache
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+
+# Config files
+.cert-manager-config.json
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Editor files
+*.swp
+*.swo
+*~
+.vscode/
+.idea/