LLRT Modules static will not work with multiple runtimes

[Sytten]

I realized that those static are very much global, so in my case I spawn a lot of different runtimes so they will conflict with each other.
I opened DelSkayn/rquickjs#342 to discuss if we could add something to the rquickjs runtime to store those. Otherwise I would do an opaque rust class with a Box<dyn Any> inside to store then in quickjs directly.