Implement fundamentals of an in-place interpreter, handling i32, i64, f32, f64 types, integer arithmetic and comparisons, if/else, block, and loop.
<rdar://111932567>
Pull request: https://github.com/WebKit/WebKit/pull/15659
Committed 266186@main (03154b1eb920): <https://commits.webkit.org/266186@main> Reviewed commits have been landed. Closing PR #15659 and removing active labels.