Refactoring some code in the workbench.
Refactoring workbench. Prefer framework agnostic packages by default.
Tweaks to how migration autoloads are handled. Autoload command.

- Added new `dump-autoload` Artisan command that runs optimized for app
and all workbenches.
- Refactored post `migrate:make` hooks to dump autoloads for
workbenches.