feat(gp-cli): tasks restart

[andreafalzetti]

Description

This is an attempt of providing gp-cli with a task restart functionality.

Restarting a task can be challenging and this PR is intentionally "lightweight" to get early feedback on the approach.

What I am doing here is leveraging the /terminal/alias/write endpoint of supervisor api. Once I know which task needs to be restart, I "re-write" those commands in the task terminal. It seems to work, but I've only briefly tested and I am concerned of side-effects of re-using the existing terminal (e.g. terminal session related things).

Ideally, we would shutdown the terminal, create a new one, set a title for it and write those commands. However, I didn't see an API endpoint for supervisor to create a new terminal. I've definitely seen capability in the supervisor-cli (supervisor terminal new) so perhaps it's easy to expose such endpoint.

Related Issue(s)

Fixes #8691

How to test

Release Notes

Documentation

[roboquat]

@andreafalzetti: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[iQQBot]

Technically, the implementation is fine, but not all tasks can be restarted without side effects, and different tasks can be related, for example, some tasks use commands like gp sync-await to wait for other tasks to complete.

[akosyakov]

I would call it run and implement in supervisor, i.e. add RunTask method to control.proto which stops the currently running task instance and start another.