Implements transparent commands

[arcanis]

It's currently fairly annoying to run the init commands, because they go through the jumper, which detects that there is no local project, asks if it should create one, spawns the init command, and fails because there's already a package.json. Additionally, running yarn dlx or pnpx isn't possible at the moment from (respectively) non-Yarn or non-pnpm projects.

This diff fixes that by defining a set of "transparent commands". The jumpers will allow those commands to be used regardless of the general environment - making it possible to run pnpx within Yarn projects, and running yarn init without prompts.

Fixes #1, fixes #2

[arcanis]

I've also removed Enquirer. While it's a good idea in theory, it's very impractical as it:

• causes spurious prompts to appear when running in the wrong directories
• causes package.json to appear on the filesystem - problematic if you're for example in the home folder

Instead, Corepack will silently accept any package manager and use their LKG releases (similar to what already happens when you're inside a non-configured project). It doesn't change much, the only downside being that the packageManager field adoption will be lower, but it's worth it if it means less disruption for the users. Additionally, the init commands (such as yarn init) still have the ability to set the packageManager field themselves if they wish to.