Simple support for custom WASM builds of SQLite

[fabiospampinato]

It'd be awesome if it there were like a few steps, documented somewhere, that one could follow to replace the wasm build of sqlite that this package ships with with a custom one. It looks like that should be possible, but it doesn't seem obvious what exact the steps should be.

It'd be interesting also if this package exported a sort of "bring your own wasm" implementation, where you give the library the Uint8Array containing sqlite yourself, so that custom builds can be used without forking this package.

[dyedgreen]

I think the browser version also does something very similar using an import map. I think you could remap the existing WASM module to a different one, to get a similar effect.