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.

A issue não nomeia arquivos, testes nem pontos de entrada. Comece revisando a estrutura do repositório e esclareça as branches propostas baseadas em classes, procedurais e de showcase; o trabalho só estará concluído quando houver um acordo sobre a reorganização do repositório e o escopo da reformulação do site.

Escrita pelo modelo de indexação a partir do texto da issue.