feat: frps-manager v1.0 - frp 0.70.1 multi-tenant web management system

- Multi-tenant client/proxy management with Flask+SQLite
- Frps server control (start/restart/token rotation)
- Generate frpc.ini with shared server token + admin API
- Dashboard API integration (live client/proxy status)
- RBAC: admin/tenant_admin/user roles
- Audit logging for all operations
- Systemd service files included
- Requires legacy INI format (frp 0.70 TOML auth broken)

.gitignore

@@ -0,0 +1,37 @@
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+*.egg-info/
+
+# venv
+venv/
+env/
+.venv/
+
+# ---- Runtime / secrets (never commit) ----
+instance/
+runtime/conf/frps*.ini
+runtime/conf/*.ini.tmp
+runtime/*.pid
+
+# Dev/test scratch
+_smoke_test.py
+
+# editor
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# binary (deploy.sh downloads)
+runtime/bin/frps
+
+# runtime logs (created at startup)
+runtime/logs/
+runtime/*.log