better match wikibase data model

src/text.rs

@@ -0,0 +1,11 @@
+use serde::{Deserialize, Serialize};
+
+/// A language used in the Wikibase data model.
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+pub struct Lang(pub String);
+
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+pub struct Text {
+    pub text: String,
+    pub lang: Lang,
+}