[Update] translation: Add Plamo API support with authentication and translation functionality

src-python/models/translation/translation_plamo.py

@@ -0,0 +1,80 @@
+from langchain_openai import ChatOpenAI
+
+class PlamoClient:
+    def __init__(self, api_key: str):
+        self.api_key = api_key
+        self.base_url = "https://api.platform.preferredai.jp/v1"
+        self.model = "plamo-2.0-prime"
+        self.supported_languages = """
+        English
+        Japanese
+        Korean
+        French
+        German
+        Spanish
+        Portuguese
+        Russian
+        Italian
+        Dutch
+        Polish
+        Turkish
+        Arabic
+        Hindi
+        Thai
+        Vietnamese
+        Indonesian
+        Malay
+        Filipino
+        Swedish
+        Finnish
+        Danish
+        Norwegian
+        Romanian
+        Czech
+        Hungarian
+        Greek
+        Hebrew
+        Simplified Chinese
+        Traditional Chinese
+        """
+        self.prompt_template = f"""
+        You are a translation assistant that uses the `plamo-translate` tool.
+        Translate the following text.Supported languages include:{self.supported_languages}
+        Translate the following text from {{input_lang}} to {{output_lang}}.
+        output only the translated text without any additional commentary.
+        """
+        self.plamo_llm = ChatOpenAI(
+            base_url=self.base_url,
+            model=self.model,
+            streaming=True,
+            openai_api_key=self.api_key,
+        )
+
+    def translate_text(self, text: str, input_lang: str, output_lang: str):
+        messages = [
+            {
+                "role": "system",
+                "content": self.prompt_template.format(
+                    input_lang=input_lang, output_lang=output_lang
+                ),
+            },
+            {"role": "user", "content": text},
+        ]
+
+        output = ""
+        for chunk in self.plamo_llm.stream(messages):
+            output += chunk.content
+
+        return output[:-1]
+
+
+if __name__ == "__main__":
+    text = """
+        毎朝コーヒーを入れるのがささやかな楽しみになってる
+        """
+    input_lang = "Japanese"
+    output_lang = "English"
+
+    plamo_client = PlamoClient(api_key="AUTH_KEY")
+    translated_text = plamo_client.translate_text(text, input_lang, output_lang)
+    print(translated_text)