[yarn-workspaces] Upgrade to the bin

[byCedric]

This is just to spark the discussion of removing it, here is why:

1. We have better monorepo support now, you shouldn't need expo-yarn-workspaces for a monorepo with apps.
2. expo-yarn-workspaces was (and I think still is) considered to be an internal tool at Expo. But, because this was almost the only way to actually set up a monorepo, it kinda leaked out into the public.

We also do have better monorepo examples to pick from:

• https://github.com/byCedric/eas-monorepo-example
• https://github.com/axeldelafosse/expo-next-monorepo-example

[brentvatne]

i think we should keep an example to make it easy to init a minimal monorepo in this repo. we can refer to eas-mono-repo-example in the readme but imo it includes too much code for people to clone and get started, you need to delete a bunch of code before you get started

[byCedric]

How about creating a "plain and stupid" example of a monorepo, without using expo-yarn-workspaces in this repo?