[dart2wasm] Use DataView in JS typed arrays

Refcator JS typed array classes to store JS `DataView`s (instead of JS
typed array with the matching type), and use V8's new optimized
`DataView` imports.

Brings JS typed array class performance from unusable to reasonable
levels. In `SkeletalAnimation` benchmark:

- Before: 1444 us.
- After: 101 us.

Future work:

- Make immutable classes extend the mutable ones. This will allow `[]`
  calls to be always inlined in JSCM.

- Move list mixin applications from the base class to implementation
  classes. This will allow members like `elementAt`, `forEach` etc. to
  have direct calls to other methods of the same class.

- Try adding a `length` field to avoid JS calls in bounds checks.

Change-Id: Ief6165fe9c4a825072077db820b105c4fca30dce
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/328920
Reviewed-by: Aske Simon Christensen <askesc@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>