Update CLI and roadmap documentation; clean up code

- Revised CLI documentation to clarify the sequence of operations for the `up` command and updated the status of features.
- Enhanced the roadmap with completed tasks marked as done.
- Removed unused import in clone_ext.py for cleaner code.
- Added assertions in test_bootstrap.py to ensure correct script generation and validate the presence of autocompletion data.

tests/test_bootstrap.py

@@ -10,6 +10,8 @@ def test_bootstrap_script_is_native_swarmui():
     assert "/mnt/swarm_data" in script
     assert "launch-linux.sh --launch_mode none --host 127.0.0.1 --port 7801" in script
     assert "systemctl enable swarmui" in script
+    assert "systemctl restart swarmui" not in script
+    assert "Data/Autocompletions" in script
     assert "mkfs.ext4" in script
     assert "apt-get upgrade" not in script
     assert ".gpu-rent-ready" in script