feat: add pnpm alias shims

[Stanzilla]

Summary

• add pn and pnx shims for pnpm >=11
• include the aliases in publish metadata
• mark pn init, pn dlx, and pnx as transparent pnpm commands
• add coverage for enabling alias shims and transparent alias commands

Fixes #833

Tests

• yarn build
• yarn test tests/Enable.test.ts tests/main.test.ts --run
• yarn typecheck
• yarn lint
• yarn test --run

[MikeMcC399]

It looks like this would throw an error if a pnpm 11 alias, such as pn, is used in a pnpm 10 project.

You should probably wait for comment from a maintainer though before investing more effort.

[Stanzilla]

@aduh95 friendly ping!

[MikeMcC399]

pnpm >=11 no longer recommends Corepack
See #687 (comment) & #687 (comment)

[Stanzilla]

pnpm >=11 no longer recommends Corepack See #687 (comment) & #687 (comment)

Well yes but since then a few things were fixed and as long as Corepack still supports it, the aliases should be supported as well, imo