Move possiblyGetConfigFromAmd method from loadComponent to loadViewModel / loadTemplate

[blackChef]

viewModel: { my: true, require: './viewModel' }

I'm developing my own component loader. I want to keep the require syntax, and add a flag to indicate that this is my component, so I can do something about it.
But when default loader see require, it loads it, give loadViewModel only the result, thus I can't find my flag.

[mbest]

When using require, there may not be a single "configuration" of the component. The default loader support two levels of require:

1. Initial definition: { require: 'componentmodule' }

2. component module

   {
       template: { require: 'templatemodule' },
       viewModel: { require: 'viewmodelmodule' }
   }
   

3. template module: '<div>Hello world</div>'

4. viewmodel module:

   {
       viewModel: function (params) {
           this.value = params.value;
       } 
   }
   

I can across a similar issue that I wanted loadViewModel to have access to other component configuration while researching #1458.