[FEATURE]: add Greek README translation

[pirrozani]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Is there a need to add a Greek translation for README?

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• docs: add Bulgarian translation of README #13014: docs: add Bulgarian translation of README (same concept — language-specific README translation)
• docs: Add Vietnamese translation of README #12162: docs: Add Vietnamese translation of README (same concept — language-specific README translation)
• Is there any plans to add translations to the README and documents for other language speakers? #3043: General discussion about adding README translations for other language speakers

If this is already covered by one of the above, please consider contributing there instead.