feat: introduce Nest workspace for local Firecracker management

- Added a new server module for the Nest workspace, integrating with UVM's API.
- Updated project description to reflect the new Nest functionality.
- Created tests for the Nest server and CLI, ensuring proper functionality and error handling.
- Refactored existing UVM server code to separate Nest and UVM functionalities.
- Removed the old UVM dashboard assets package as it is now part of the Nest workspace.
- Enhanced error messages for clarity regarding server shutdown commands.

tests/test_server.py

@@ -322,20 +322,10 @@ class ApiRouterTests(unittest.TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.json(), {"status": "ok"})
 
-    def test_dashboard_and_assets_are_available_without_credentials(self) -> None:
-        root = self.client.get("/", follow_redirects=False)
-        dashboard = self.client.get("/dashboard")
-        stylesheet = self.client.get("/dashboard/static/css/dashboard.css")
-        script = self.client.get("/dashboard/static/js/dashboard.js")
-
-        self.assertEqual(root.status_code, 307)
-        self.assertEqual(root.headers["location"], "/dashboard")
-        self.assertEqual(dashboard.status_code, 200)
-        self.assertIn("UVM Control", dashboard.text)
-        self.assertEqual(stylesheet.status_code, 200)
-        self.assertIn("--acid", stylesheet.text)
-        self.assertEqual(script.status_code, 200)
-        self.assertIn("sessionStorage", script.text)
+    def test_standalone_uvm_api_does_not_serve_the_nest_dashboard(self) -> None:
+        for path in ("/", "/dashboard", "/dashboard/static/js/dashboard.js"):
+            with self.subTest(path=path):
+                self.assertEqual(self.client.get(path).status_code, 404)
 
     def test_vm_routes_require_and_accept_the_api_token(self) -> None:
         for method, path, payload in (
@@ -381,7 +371,9 @@ class ApiRouterTests(unittest.TestCase):
         response = self.client.post("/exit", headers=self.headers)
 
         self.assertEqual(response.status_code, 503)
-        self.assertEqual(response.json(), {"detail": "server shutdown is unavailable outside uvm --serve"})
+        self.assertEqual(response.json(), {
+            "detail": "server shutdown is unavailable outside nest --serve or uvm --serve",
+        })
 
     def test_vm_lifecycle_routes_and_extra_field_validation(self) -> None:
         created = self.client.post(
@@ -773,14 +765,12 @@ class ApiRouterTests(unittest.TestCase):
         self.assertEqual(response.status_code, 404)
         self.assertEqual(response.json(), {"error": {"message": "VM not found: missing"}})
 
-    def test_api_schema_exposes_dashboard_and_management_operations(self) -> None:
+    def test_api_schema_exposes_management_operations(self) -> None:
         schema = self.client.get("/openapi.json").json()
 
         self.assertEqual(
             {(path, method) for path, methods in schema["paths"].items() for method in methods},
             {
-                ("/", "get"),
-                ("/dashboard", "get"),
                 ("/health", "get"),
                 ("/exit", "post"),
                 ("/install", "post"),