Add workflow to automatically update assets via `nova-kit/nova-packages-tool`

[crynobone]

• laravel-nova will be served via external window.LaravelNova and no longer requires asset rebuild whenever mixins contains any changes.
• nova-kit/nova-packages-tool will bump new version after Nova made any minor/patch release before user can received the updated version.
• smaller dist files since it no longer build all mixins.