fix: handle disconnected streams on codegen download

[pvlugter]

Refs #394

Switch over to axios, which gets the disconnected signals. And use stream.pipeline which adds error handling to the stream automatically (otherwise it's adding event handlers for error and aborted on the response data, and close on the writer for resolving successfully).

This just logs the error currently, on disconnected streams. Looks like this

Fetching kalix-codegen-js from https://repo.lightbend.com/raw/kalix/versions/1.0.0/kalix-codegen-js-x86_64-apple-darwin
Saving to .../kalix-scripts/bin/kalix-codegen-js.bin
Failed to download Kalix codegen binary: Error [ERR_STREAM_PREMATURE_CLOSE]: Premature close
    at new NodeError (internal/errors.js:322:7)
    at IncomingMessage.onclose (internal/streams/end-of-stream.js:117:38)
    at IncomingMessage.emit (events.js:400:28)
    at TLSSocket.socketCloseListener (_http_client.js:432:11)
    at TLSSocket.emit (events.js:412:35)
    at net.js:686:12
    at TCP.done (_tls_wrap.js:564:7) {
  code: 'ERR_STREAM_PREMATURE_CLOSE'
}

Would make sense to wrap in some retries.

[pvlugter]

The underlying issue with the proxy load balancing seems to be resolved, but it may still be useful to have the error handling here. Not sure we should worry about retries, but it does at least detect and show the error, and remove the partial download so it can't be used in a broken way.

[pvlugter]

Also add a process exit on errors, so that scripts don't continue past this point and it's clear it failed.

[ennru]

LGTM.