Implement spread for arrays

[0xe]

TODO:

• Objects with [Symbol.iterator] implementations should work correctly
• skipIndices

@andreabergia and I have been working on this for a while. We plan to tackle spread for function calls in a subsequent change.

[rbri]

import?

[rbri]

@0xe have to do an HtmlUnit release first, will try this afterwards, maybe at he end of the week

[rbri]

@0xe i like to do a smoke test for this with HtmlUnit, it will be great if you can rebase this to the head

[0xe]

I think the Android test failures are unrelated. I see errors trying to install the emulator:

  Installing latest emulator.
  /usr/bin/sh -c \sdkmanager --install emulator --channel=0 > /dev/null
  Warning: An error occurred while preparing SDK package Android Emulator: Server returned HTTP response code: 502 for URL: https://dl.google.com/android/repository/emulator-linux_x64-14214601.zip.
Terminate Emulator
  /usr/local/lib/android/sdk/platform-tools/adb -s emulator-5554 emu kill
  error: could not connect to TCP port 5554: Connection refused
  The process '/usr/local/lib/android/sdk/platform-tools/adb' failed with exit code 1
Error: The process '/usr/bin/sh' failed with exit code 1

[rbri]

@0xe smoke test with HtmlUnit was successful!

[gbrail]

This works for me and I don't see anything concerning. I'm going to merge it and keep moving forward. Thanks!