[new] Add get_includes method to parse.py

[diivm]

How to do:

• Parse using options=clang.TranslationUnit.PARSE_DETAILED_PROCESSING_RECORD

• Function:

  def get_includes(node):
  includes = []
  
  for child_node in valid_children(node):
      child_cursor = child_node["cursor"]
  
      if child_cursor.kind.name == "INCLUSION_DIRECTIVE":
          includes.append(child_cursor.displayname)
  
  return includes