Criando a tela de loading, login, register e main page

[ruan-cardozo]

Nesse pr foram feitas as issues:

• [x] https://github.com/Leordrgs/TrucoMobile/issues/30

• [x] https://github.com/Leordrgs/TrucoMobile/issues/31

• [x] https://github.com/Leordrgs/TrucoMobile/issues/32

• [x] https://github.com/Leordrgs/TrucoMobile/issues/33