feat(init-server.py): implement http_host_sync command for server initialization
refactor(http_host_lib): enhance asset downloading functions to return status of changes made
feat(docs): enhance self_hosting.md with additional instructions for quick setup and deployment
fix(nginx.py): add missing directory creation for nginx certificates in ssh_lib
refactor(nginx.py): update curl command filtering logic based on skip_planet configuration in http_host_lib