Allow passing --no-modules-global to wasm-bindgen

[RReverser]

💡 Feature description

wasm-bindgen supports customisation of global variable generated in --target no-modules mode via --no-modules-global VAR option.

Currently there is no way to pass this option from wasm-pack side. I propose adding support in form of either:

• --target no-modules=name
• --target no-modules --no-modules-global name - this feels a bit more verbose.
• --target no-modules --use-crate-name - in this case, just pass crate name to wasm-bindgen.