Changes to how the config files are generated

[gabcro]

This PR changes how the configuration files are created:

• First the config_generator was separeted in three different scripts:
  • jenkinsfile_generator createst the jenkinsfile for the core
  • template_generator is meant to create the veilog top based on the core top module
  • config_generator creates the config json that indicates which files are necessary to simulate the core
• Second the config_generator logic was changed:
  • Now the logic is bottom-up trying to find the files and includes based on a selected top module
  • The core top module also had its choice changed to a score based one