Fix pipeline types

[juliangruber]

Tests are failing locally, but not in CI. This is because we didn't include the build step in CI. This PR fixes that. It also then disables it temporarily, so that we can publish new versions of this project again - tsc isn't passing.

@bajtos I wasn't able to figure out the type failures unfortunately :| Do you have an idea?

[juliangruber]

Hindsight review please, I need to get an urgent release out

[bajtos]

@bajtos I wasn't able to figure out the type failures unfortunately :| Do you have an idea?

When I oversimplify the problem:

• pipeline expects the first argument to be Node.js ReadableStream and the second argument to be Node.js WritableStream
• res.body has an Unidici-specific readable-stream type that's similar to Node.js readable-stream type but not fully compatible from TypeScript's point of view
• tar.x returns tar-specific type Unpack, which is similar to Node.js writable-stream but not fully compatible from TypeScript's point of view

This could be also a problem of @types/node or the typings provided by Undici or Tar.

I'll open a PR to fix this.