Implement `ipfs diag cmds wait`

Description

Contributor guide

Tech stack

go

Domain

clibackend

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

GoIPFS command line interface

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

60

Research direction

The issue asks to implement a command that blocks until a selected command finishes. Start by examining existing diagnostic commands in the repository, particularly the `ipfs diag cmds` command (source likely in `commands/diag.go` or similar). Review the referenced issue #3114 for context on why this is needed. Check if there are any existing implementations or discussions in the comments. The implementation should follow the pattern of other IPFS commands, using the command framework provided by go ipfs. Pay attention to how commands are registered and how to wait for command completion.