[9.x] Decouple database component from console component

[vdauchy]

Hi,

I'm using https://github.com/illuminate/database as standalone dependency and since @nunomaduro improved the console output this component have a hard dependency toward https://github.com/illuminate/console (It is impossible to run migrations without it).

There was already some work to handle the absence of output but it does not handle the absence of the View\Components: illuminate/database@8e5c9a3

This PR tryies to decouple furthermore by checking if the View\Components classes exist... Else the callbacks passed as args are executed (this is mandatory as some of them do critical work).

Thanks for your work :-)