refactor(AkkomaTranslation.java): add the AkkomaTranslation model back

mastodon/src/main/java/org/joinmastodon/android/model/AkkomaTranslation.java

@@ -0,0 +1,14 @@
+package org.joinmastodon.android.model;
+
+public class AkkomaTranslation extends BaseModel{
+	public String text;
+	public String detectedLanguage;
+
+	public Translation toTranslation() {
+		Translation translation=new Translation();
+		translation.content=text;
+		translation.detectedSourceLanguage=detectedLanguage;
+		translation.provider="Akkoma";
+		return translation;
+	}
+}