[Core feature] pyflyte info show Version

[Future-Outlier]

Motivation: Why do you think this is important?

when typing pyflyte info, we want to know the backend version of flyteadmin, this is super helpful.

(dev) future@outlier ~ % pyflyte info
11:33:17.941096 INFO     file.py:252 - Using flytectl/YAML config /Users/future-outlier/.flyte/config-sandbox.yaml
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
I0000 00:00:1731295999.145644 10087933 config.cc:230] gRPC experiments enabled: call_status_override_on_cancellation, event_engine_dns, event_engine_listener, http2_stats_fix, monitoring_experiment, pick_first_new, trace_record_callops, work_serializer_clears_time_cache
╭─────────────────────────────────────────────────────────── Flytekit CLI Info ───────────────────────────────────────────────────────────╮
│                                                                                                                                         │
│                                                                                                                                         │
│ This CLI is meant to be used within a virtual environment that has Flytekit installed. Ideally it is used to iterate on your Flyte      │
│ workflows and tasks.                                                                                                                    │
│                                                                                                                                         │
│ Flytekit Version: 1.999.0dev0                                                                                                           │
│ Flyte Backend Endpoint: localhost:30080                                                                                                 │
│                                                                                                                                         │
│                                                                                                                                         │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

Goal: What should the final outcome look like, ideally?

We should add a line Flyte Backend Version: vXXX under Flytekit Version.
You can use API from this PR.
flyteorg/flytekit#2874

Describe alternatives you've considered

This is doable and we should do this.

Propose: Link/Inline OR Additional context

No response

Are you sure this issue hasn't been raised already?

• Yes

Have you read the Code of Conduct?

• Yes

[400Ping]

#take

[davidlin20dev]

#take