Implement `coffee nurse` Handler for Locally Missing Repository

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[tareknaser]

I wondered what happens if I delete the repositories directory and not just a sub-directory.

Maybe the directory is a default one and it is always created, right?

Yes, we call

check_dir_or_make_if_missing(format!("{def_path}/repositories")).await?;

with each command

[vincenzopalazzo]

➜  coffee git:(pr197) cargo run --bin coffee -- --network testnet nurse
    Finished dev [unoptimized + debuginfo] target(s) in 0.08s
     Running `target/debug/coffee --network testnet nurse`
╭────────────────────────────────────────────────╮
│ ●   Actions Taken        Affected repositories │
├────────────────────────────────────────────────┤
│ ●   Restored using Git   folgore-git           │
╰────────────────────────────────────────────────╯

Amazing!