[New Build System] Migration command

[SergioRibera]

As indicated in the issue #108 the workspaces system would become deprecated so to facilitate the adoption of the new building system we would have to have a command that allows us to automate this migration, this command should also provide for future migrations, an implementation attempt could be

use clap::*;

#[derive(ValueEnum)]
enum MigrationStrategy {
  V1ToV2,
  // ...
}

#[derive(Debug, Parser)]
pub struct Opts {
    #[clap(subcommand)]
    pub command: Command,
}

#[derive(Debug, Parser)]
pub enum Command {
  Migration {
    #[clap(long, short, default_value = "v1tov2")]
    strategy: Option<MigrationStrategy>,
  }
}

The files related to this change are in the cli and the issue depends on the global implementation determined for the new build system

Important

All changes should PR to the runtime branch and you can check the differences here