Transcript translation, env samples

[wiktorKycia]

Key changes

• provided detailed list of env variables for each module, additionally in the project root folder, there is a .env.sample with all the variables
• added the feature of translating transcripts to the interface language
  • the translate() function is tested and works as expected, however I was unable to test it in a whole running app due to lack of twilio
• added error handling in case of unauthenticated twilio
• removed duplicated translation in base.po files

[allinorcannon]

Make the changes and it's fine - as we've talked the task is short, but it's always good to be more careful than not - the twilio issue is being resolved

[Copilot]

Pull Request Overview

This PR adds transcript translation functionality and provides comprehensive environment variable samples for easier project setup. The key enhancement allows transcripts to be translated to the user's interface language using OpenAI's API.

• Added transcript translation feature using OpenAI GPT-4o-mini model
• Created comprehensive .env.sample files for all modules (frontend, backend, faker, and project root)
• Improved error handling for Twilio authentication failures and call initiation

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
frontend/translate.py	New module implementing OpenAI-based transcript translation functionality
frontend/requirements.txt	Added openai dependency for translation feature
frontend/main.py	Integrated translation feature and improved error handling for call failures
frontend/locales/*/base.po	Removed duplicate "Day" translations and added new error message
frontend/Dockerfile	Updated to include new translate.py module
frontend/.env.sample	Environment variables template for frontend module
backend/.env.sample	Environment variables template for backend module
faker/.env.sample	Environment variables template for faker module
.env.sample	Comprehensive environment variables template for project root
README.md	Updated setup instructions to include OpenAI API key requirement

[naibatsuteki]

LGTM when you cover @allinorcannon's comments.

I'm also adding Copilot to the reviewers. (If it finds something, double-check if this is a real issue)