Implement custom spinner

[seregazhuk]

We need to decouple from alecrabbit/php-console-spinner. It has a lot of dependencies, for example under the hood it requires laravel container 6.0 and thus cannot be installed on the latest laravel version.

The logic to render a spinner is pretty simple and can be easily implemented right here inside the library.

[alecrabbit]

Hi @seregazhuk!
It will be a pleasure for me if you'll consider to return to use my package 😃
I mean new one - alecrabbit/php-cli-snake
it has literally zero dependencies, but still offers some useful features

[seregazhuk]

Hi @alecrabbit Thank you! That's great 👍 I'll look through it.

[seregazhuk]

@alecrabbit done! 👍