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.

uvm/app.py

@@ -9,6 +9,7 @@ from .config import Settings
 from .firecracker.process import FirecrackerProcessManager
 from .images import ImageStore
 from .install import Installer
+from .known_hosts import KnownHostsManager
 from .lifecycle import LifecycleService
 from .network import NetworkManager
 from .state import StateStore
@@ -32,7 +33,8 @@ def build_application(emit: Callable[[str], None] | None = print) -> Application
     images = ImageStore(settings, runner)
     network = NetworkManager(settings, runner)
     process = FirecrackerProcessManager(settings)
-    lifecycle = LifecycleService(settings, state_store, images, network, process)
+    known_hosts = KnownHostsManager(settings)
+    lifecycle = LifecycleService(settings, state_store, images, network, process, known_hosts=known_hosts)
     installer = Installer(settings, runner, state_store, emit=emit)
     return Application(
         settings=settings,