Please add a get_project_notification_scheme function

[Caramba77]

Just as the same for permissions scheme in Jira.
Here it is :

    def get_project_notification_scheme(self, project_id_or_key):
        """
        Gets a notification scheme assigned with a project

        :param project_id_or_key: str
        :return: data of project notification scheme
        """
        base_url = self.resource_url("project")
        url = "{base_url}/{project_id_or_key}/notificationscheme".format(
            base_url=base_url, project_id_or_key=project_id_or_key
        )
        return self.get(url)

[gonchik]

Hi!
Could you send as pull request?

[Caramba77]

Pull request done : [JIRA] Add get_project_notification_scheme to jira.py #907