Get the chunks for the script from the plugin
Return a dictionary of strings for the script, the keys that are allowed are:
- pre_import (goes before all the standard imports)
- post_import (goes after all the standard imports)
- pre_build (goes at the very beginning of the build function)
- pre_build_instantiation (goes right before instantiation of the PDSimCore subclass)
- post_build_instantiation (goes right before instantiation of the PDSimCore subclass)
- post_build (goes at the very end of the build function)
- pre_run (goes at the beginning of the run function)
- post_run (goes at the end of the run function)
- plugin_injected_chunks (a dictionary of chunks that is passed to the InputToolBook.get_script_chunks() function