feat: Loading Screen callback function with percent and message

[tonbotfy]

It will help a lot of people who need this whatsapp screen status.

When the screen is loading, the callback function 'onLoadingScreen' is called with two parameters:
percent: number
message: string

To test (it takes a while): npm install github:tonbotfy/wppconnect

wppconnect
.create({
session: 'teste',
onLoadingScreen: (percent, message) => {
console.log('LOADING_SCREEN', percent, message);
},
})

[edgardmessias]

@tonbotfy , could you fix the lint before the merge?

[tonbotfy]

@edgardmessias done, my friend! 👍🏼