feat: resolve #191: add support for 'variables:' includes

        # Prepare options

        self.__options = options

    # Merges

    @staticmethod

    def __merges(data, additions):

        # Merge data

        for key in additions:

            # Handle included expanding data

            if key in data and isinstance(additions[key], dict) and key in ['variables']:

                data[key].update(additions[key])

            # Handle included overriding data

            else:

                data[key] = additions[key]

    # Scripts

    @staticmethod

    def __scripts(items):

                        with open(Path(self.__options.path) / file_path,

                                  'r') as include_data:

                            include_additions = yaml_safe_load(include_data)

                            data_new.update(include_additions)

                            self.__merges(data_new, include_additions)

            # Agregate included data

            data_new.update(data)

            self.__merges(data_new, data)

            data = data_new

            data_new = None

include: '/job_variables.yml'

stages:

  - includes

variables:

  VALUE_2: 2

  VALUE_3: 2

  VALUE_4: 2

'Job 1':

  stage: includes

  image: alpine:3.11

  variables:

    VALUE_3: 3

    VALUE_4: 3

    VALUE_5: 3

  script:

    - echo 'Job 1'

    - test "${VALUE_5:?}" -eq '3'

    - test "${VALUE_4:?}" -eq '3'

    - test "${VALUE_3:?}" -eq '3'

    - test "${VALUE_2:?}" -eq '2'

    - test "${VALUE_1:?}" -eq '1'

variables:

  VALUE_1: 1

  VALUE_2: 1

  VALUE_3: 1