feat: implement resource resizing for VMs with storage management

- Added KnownHostsManager to handle cleanup of SSH known_hosts entries upon VM deletion.
- Introduced disk_size_bytes method in ImageStore to read logical disk capacity.
- Enhanced LifecycleService to manage VM resource resizing, including CPU, RAM, and storage.
- Updated application configuration to support known_hosts_files for SSH management.
- Modified dashboard to include resource resizing options in the UI.
- Improved error handling and validation for resource inputs in the dashboard.
- Removed obsolete .pyc files from the repository.

tests/test_cli.py

@@ -108,6 +108,7 @@ class CliCreateTests(unittest.TestCase):
             command="create",
             cpu="1",
             ram="512",
+            storage="30G",
             host_ip=None,
             username="admin",
             password="custom-secret",