feat: add es_419 and es_ES translations

[BryanttV]

Description

This PR adds translation support to the plugin. Currently, it only adds the translation to Spanish (Latin America) and Spanish (Spain).

How to Test

1. Install this plugin with the changes in this branch in your environment.
2. Install edx-ora2, openedx-events, and openedx-filters with the latest versions.
3. Change the platform language in (Account > Site Preferences > Site Language). Set it to Spanish (Latin America) or Spanish (Spain).
4. Enabled the functionality by adding the following setting in your LMS: ENABLE_TURNITIN_SUBMISSION = True
5. In a unit of the course create a new ora assessment.
6. In the LMS you can see the Turnitin warning message translated into your selected language.

Screenshots