nodejs-binding-v2.1.0: feat/wasm: Wasm export (#706)

* Added new rumqttc version to prevent removed feature warning

* Added asm to workspace

* Updated name to use in rust, added pub mod

* revert name

* Getter for wasm client

* Added clone

* renamed to into_inner

* reverted cargo changes

* Added wasm back as its own workspace

* Exposed most modules for wasm