Support V8_LITE_MODE, V8_JITLESS, and friends

[Alloyed]

This is an interest check before I put in the work to make a PR!

I have a local fork that adds a few of the upstream build flags intended for embedders in memory-constrained environments, or where JIT is disallowed:

Alloyed@5c2e580
Alloyed@28a362b

This includes

• V8_LITE_MODE
• V8_JITLESS
• Sparkplug, Maglev, and Turbofan (enabled when JIT is enabled)
• V8_ENABLE_WEBASSEMBLY (webassembly heavily depends on jit compilation)

since this requires listing out all the files that require webassembly, and the list of those has changed upstream, as part of this work I'd also bump the v8 version as a prerequisite PR.

Let me know if this is still within the goals of the project, thank you.

[bnoordhuis]

Yes, all of those are welcome.

since this requires listing out all the files that require webassembly

That's fine and maybe something I'll switch back to in general (not just for wasm) because of #60 (comment), maintenance hassle be damned. If you're up for it, so much the better.