Declares the binaries that should be built for a custom 
ComponentSpec type.
 The following example demonstrates how to register a binary for a custom component type using a plugin with a
 
ComponentBinaries annotation.
 Furthermore the plugin registers 'DefaultSampleBinary' as implementation for 
BinarySpec.
 
 interface SampleComponent extends VariantComponentSpec {}
 interface SampleBinary extends BinarySpec {}
 class DefaultSampleBinary extends BaseBinarySpec implements SampleBinary {}
 apply plugin: MyCustomBinariesPlugin
 class MyCustomBinariesPlugin extends RuleSource {
     @ComponentType
     void register(TypeBuilder builder) {
         builder.defaultImplementation(DefaultSampleBinary)
     }
     @ComponentBinaries
     void createBinariesForSampleLibrary(ModelMap binaries, SampleComponent component) {
         binaries.create("${component.name}Binary", SampleBinary)
     }
 }