Add translations for enums

Add translation for the error messages:

• UNKNOWN_QUESTION_TYPE,
• NO_ANSWER_OPTIONS_FOUND,
• NO_CORRECT_ANSWER_FOUND,
• ANSWER_OPTIONS_DONT_MATCH_TYPE,
• INVALID_REGEX

Add translations for the warning messages:

• CHECK_QUESTION_NAME,
• UNKNOWN_PARAGRAPH_TYPE,
• REGEX_RESTRICTION

Add translations for the question types:

• SINGLE_CHOICE,
• MULTIPLE_CHOICE,
• TEXT_MATCH,
• REGULAR_EXPRESSION,
• UNKNOWN