A new look for the ew-javascript

With the new goals in mind, I think the website need an upgrade and also changing the file structure to improve the easiness of browsing the files.

~~I opened #1 with this purpose in mind.~~

## Overhaul the entire repo

I set my mind on entirely reformatting and divide the branches into 2 major version, which is:
- class-based approach (probably class-dev branch)
- procedural approach ([main-branch](https://github.com/EmptyWork/ew-javascript))

With one branch dedicate to showcase and contain website files for Demo purpose.