Add vendor publish as well as register make:fm-model command

[likeadeckofcards]

This PR creates 2 option vendor:publish options. The default will publish a new model in the stubs folder that will be used by the make:fm-model command. The second option will publish the fm.model to override the default model.stub so you can use make:model intended if you plan to only use this project with FileMaker backed models. Also, created a new command make:fm-model that will create model similar to Laravel's native make:model command. The readme file has been updated to include these new features.

[Smef]

I like the updated artisan command, but I don't think we need to do the stub stuff in here. It's part of the native Laravel feature set, isn't it? Users could update the stub on their own if they wanted to. I'm not sure what it's adding to have in here.