Fix mount and provider references; rename and restructure menshen deployment
- Fixed mount path conflict for /etc/leap/ca in templates/deployment.yaml
- Corrected provider_ca reference in templates/deployment.yaml
- Renamed all instances of leap-backend to provider-backend
- Added name suffix menshen to templates for improved distinction
- Introduced provider-configmap in templates
- Updated values.yaml to expose configuration options for menshen
- Moved scripts to the podlily repository for better maintainability