request: Add `init` command to bootstrap a melos project

[exaby73]

Is there an existing feature request for this?

• [X] I have searched the existing issues.

Command

melos init

Description

Running melos init should in theory automate the steps defined in Getting Started

Reasoning

Currently setting up a melos project is very manual having to create your pubspec.yaml and melos.yaml. This new init command would solve that

Additional context and comments

No response