Improve the UX/DX for creating a module for framework

[nazarhussain]

Expected behavior

With the json based module specification, it's easy to export, but its difficult to introduce some common behavior to all modules.

Also its not aligned with other framework structs we are providing e.g. To create a new transaction we will specify something like

class MyTransaction extends BaseTransaction {}

We want to align module framework struct with similar way and introduce a BaseModule class.

Actual behavior

Currently we are expecting any module to export a json object in following structure.

{
   alias: '',
   defaults: {},
   load: async () {},
   unload: async () {},
}

Steps to reproduce

Which version(s) does this affect? (Environment, OS, etc...)