Builder Generator

Adds ability to generate builder for a class and switch between them. Switching between builder and source class is similar to 'Go To Test' action. Generated builder class does not use reflection, only setter methods or constructor. Usage:

• ALT+SHIFT+B inside a file:
• creates a builder if it does not exist
• switches between class and builder if builder exists
• Code | Generate menu (ALT+Insert) from a class:
• creates a builder if it does not exist
• regenerates builder if it exists
• Settings | Tools | Builder Generation Defaults
• store default settings of builder generation