[Major + Breaking] Change directory structures

[DronRathore]

This will be a breaking change!

I am planning to change the directory structure of this project, currently you need to require all the packages individually to use them(yeah I wrote this very badly back then).

I am going to merge them under goexpress itself. This will make things more easy as:

• You need to require only one package
• Overall code of the repo too will improve

Please leave your suggestions/ideas below.