Greek locale support (#2212)

* Add hellenic (greek) translations to i18n.yml

* Hellenic language (Greek) changes to mod.rs

* fix dates in  i18n.yml

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Co-authored-by: Maurus Decimus <mauro@stalw.art>

crates/nlp/src/language/mod.rs

@@ -171,6 +171,7 @@ impl Language {
             "sn" => Language::Shona,
             "ak" => Language::Akan,
             "ca" => Language::Catalan,
+            "el" => Language::Greek,
             "sv" => Language::Swedish,
         )
         .copied()