Allow to see smart contract disassembly/decompile

[vgrichina]

V8 released neat tool to decompile WASM code in a more readable way:

https://v8.dev/blog/wasm-decompile

This will be useful feature for:

• security research of third-party contracts
• our own research of how well our dev tools work in terms of what gets compiled in (e.g. AssemblyScript tends to generate terse code than Rust).

[bowenwang1996]

That would be a very cool feature!

[frol]

Cool feature!

For the reference, it is blocked on near/nearcore#1712