Implement support for Wasm's memory-control proposal

[fitzgen]

https://github.com/WebAssembly/memory-control

[fitzgen]

Note: while I am opening this tracking issue now for completeness, I personally don't think we should implement support until the proposal has matured a bit. It is effectively multiple proposals right now and it isn't clear what is going to actually get standardized. I also have concerns about its potential perf impact on high-cotenancy Wasm embedders.