Some rework of RasPi generator supporting pre-installed libraries.

...rtiss/af3/platform/raspberry/generator/extension/.ratings

...ry/generator/extension/RaspberryPIGeneratorExtension.java

...3/platform/raspberry/generator/extension/library/.ratings

...extension/library/BrickLibraryGeneratorExtensionBase.java

...extension/library/PiHALLibraryGeneratorExtensionBase.java

.../extension/library/VescLibraryGeneratorExtensionBase.java

...tform/raspberry/generator/extension/motorcontrol/.ratings

...sion/motorcontrol/MotorControlGeneratorExtensionBase.java

...ion/motorcontrol/MotorControlInputGeneratorExtension.java

...rtiss/af3/platform/raspberry/generator/framework/.ratings

...ator/framework/IPreinstalledHeaderGeneratorExtension.java

...tor/framework/IPreinstalledLibraryGeneratorExtension.java

...rator/framework/IRasPiCopiedHeaderGeneratorExtension.java

...framework/IRasPiCopiedLibraryBasedGeneratorExtension.java

.../framework/IRasPiCopiedSourceBasedGeneratorExtension.java

...rry/generator/framework/IWriteableGeneratorExtension.java