Feature/node tester package (#3634)

* create node tester package dir

* start building node tester package

* refactor code + build updates

* fix up types

* add more methods and fix up types

* use node tester sdk inside wallet

* fix frontend state

* Use Node 18 instead of 16

* Fix up dependencies and yarn workspace

* Fix lint error

* Try to fix up linting error

* Remove explorer linting and move it to the existing action

* Add wasm-pack build to linting GH Action

* change lerna to use workspaces and fix linting errors

* Fix up node versions in GitHub Actions and add wasm-pack

* fix build:lint target in sdk

* exclude all worker.js from eslint for sdk

---------

Co-authored-by: Mark Sinclair <mmsinclair@users.noreply.github.com>

scripts/build/yarn/wasm-placeholder/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "@nymproject/nym-client-wasm",
+  "version": "1.0.0",
+  "sideEffects": false
+}