[CLI] add support for listing apps

[nicolai86]

What does this PR do?

This PR changes the CLI to add support for listing apps. For our launch of BYOC support we want to be able to list apps and also filter by cluster which executes the application.

listing apps

❯ lightning list apps
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃ id                         ┃ name                       ┃ status  ┃ cluster       ┃ created    ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━╇━━━━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ 01g9g4p2my8a3na6jx4kdxtmzn │ lightning/notebook-manager │ running │ litng-ai-03   │ 2022-08-02 │
│ 01g92nrr7r06zh8nhddzkhg213 │ fresh-boyd-193             │ stopped │ test-raphael9 │ 2022-07-28 │
└────────────────────────────┴────────────────────────────┴─────────┴───────────────┴────────────┘

the --cluster-id flag can be passed to list only apps in a specific cluster:

❯ lightning list apps  --cluster-id test-raphael9
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃ id                         ┃ name           ┃ status  ┃ cluster       ┃ created    ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━╇━━━━━━━━━╇━━━━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ 01g92nrr7r06zh8nhddzkhg213 │ fresh-boyd-193 │ stopped │ test-raphael9 │ 2022-07-28 │
└────────────────────────────┴────────────────┴─────────┴───────────────┴────────────┘

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cc @Borda @tchaton @rohitgr7

[alecmerdler]

Nice job!

[hhsecond]

Nice job! Some minor change requests but since it's merging as "experimental", I don't want to block the PR. The exception handling is something I think we should do now though, but again if you are keeping it for later, please track that in a ticket.

[awaelchli]

Accept to unblock

[hhsecond]

Approving to unblock as I am signing off