Use ArraySlice to slice a Vector

[jdunkerley]

[ci no changelog needed]

Pull Request Description

Use an ArraySlice to slice Vector. Avoids memory copying for the slice function.

Important Notes

Test	Ref	New
New Vector	71.9	71.0
Append Single	26.0	27.7
Append Large	15.1	14.9
Sum	156.4	165.8
Drop First 20 and Sum	171.2	165.3
Drop Last 20 and Sum	170.7	163.0
Filter	76.9	76.9
Filter With Index	166.3	168.3
Partition	278.5	273.8
Partition With Index	392.0	393.7
Each	101.9	102.7

• Note: the performance of New and Append has got slower from previous tests.

Checklist

Please include the following checklist in your PR:

• [x] The documentation has been updated if necessary.
• [x] All code conforms to the Scala, Java, and Rust style guides.
• All code has been tested:
  • [x] Unit tests have been written where possible.
  • [ ] If GUI codebase was changed: Enso GUI was tested when built using BOTH ./run ide build and ./run ide watch.