Handle `KeyboardInterrupt` in CLI when getting run plan

[jvstme]

Steps to reproduce

1. dstack apply a run configuration
2. Press Ctrl+C while getting run plan

Expected behavior

dstack apply exits cleanly.

Actual behavior

Traceback (most recent call last):
  File "/home/jvstme/git/dstack/dstack/venv/bin/dstack", line 8, in <module>
    sys.exit(main())
  File "/home/jvstme/git/dstack/dstack/src/dstack/_internal/cli/main.py", line 75, in main
    args.func(args)
  File "/home/jvstme/git/dstack/dstack/src/dstack/_internal/cli/commands/apply.py", line 70, in _command
    configurator.apply_configuration(
  File "/home/jvstme/git/dstack/dstack/src/dstack/_internal/cli/services/configurators/run.py", line 68, in apply_configuration
    run_plan = self.api.runs.get_plan(
  File "/home/jvstme/git/dstack/dstack/src/dstack/api/_public/runs.py", line 467, in get_plan
    return self._api_client.runs.get_plan(self._project, run_spec)
  File "/home/jvstme/git/dstack/dstack/src/dstack/api/server/_runs.py", line 61, in get_plan
    resp = self._request(f"/api/project/{project_name}/runs/get_plan", body=body.json())
  File "/home/jvstme/git/dstack/dstack/src/dstack/api/server/__init__.py", line 118, in _request
    resp = self._s.post(f"{self._base_url}/{path}", **kwargs)
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/requests/sessions.py", line 637, in post
    return self.request("POST", url, data=data, json=json, **kwargs)
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/requests/sessions.py", line 589, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/requests/sessions.py", line 703, in send
    r = adapter.send(request, **kwargs)
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/requests/adapters.py", line 667, in send
    resp = conn.urlopen(
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/urllib3/connectionpool.py", line 715, in urlopen
    httplib_response = self._make_request(
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/urllib3/connectionpool.py", line 467, in _make_request
    six.raise_from(e, None)
  File "<string>", line 3, in raise_from
  File "/home/jvstme/git/dstack/dstack/venv/lib64/python3.8/site-packages/urllib3/connectionpool.py", line 462, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/lib64/python3.8/http/client.py", line 1348, in getresponse
    response.begin()
  File "/usr/lib64/python3.8/http/client.py", line 316, in begin
    version, status, reason = self._read_status()
  File "/usr/lib64/python3.8/http/client.py", line 277, in _read_status
    line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
  File "/usr/lib64/python3.8/socket.py", line 669, in readinto
    return self._sock.recv_into(b)
KeyboardInterrupt

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[IshuSinghSE]

I hope this message finds you well. I would like to express my interest in taking on issue #1626, which involves handling the KeyboardInterrupt exception in the CLI during the retrieval of the run plan.

Please assign this issue to me at your earliest convenience @peterschmidt85 .
Thank you for your consideration.

[peterschmidt85]

@IshuSinghSE Sure, feel free to send your PR!