switch to commander, enable sub-commands, completion

[mmkal]

cleye has some limitations:

• no single character flags right now (opened a PR but stalled for the moment: feat: support single-character flags privatenumber/type-flag#27)
• no subcommands
• therefore also hard to implement "default" subcommands with the dot-separated subcommand syntax
• nice typescript features are hidden by this library anyway, so paying for that complexity without adding value
• most importantly, solo developer, small fraction of the usage

So this switches to commander as the underlying cli library. It's a big change but the basic usage of trpc-cli is much the same.

[pkg-pr-new]

Open in Stackblitz

pnpm add https://pkg.pr.new/mmkal/trpc-cli@56

commit: 0f8b4fd