ISSUE=11042: add tts model in siliconflow (#11043)

api/core/model_runtime/model_providers/siliconflow/llm/_position.yaml

 - meta-llama/Meta-Llama-3.1-8B-Instruct
 - google/gemma-2-27b-it
 - google/gemma-2-9b-it
-- deepseek-ai/DeepSeek-V2-Chat

api/core/model_runtime/model_providers/siliconflow/siliconflow.yaml

   - text-embedding
   - rerank
   - speech2text
+  - tts
 configurate_methods:
   - predefined-model
   - customizable-model

api/core/model_runtime/model_providers/siliconflow/tts/fish-speech-1.4.yaml

+model: fishaudio/fish-speech-1.4
+model_type: tts
+model_properties:
+  default_voice: 'fishaudio/fish-speech-1.4:alex'
+  voices:
+    - mode: "fishaudio/fish-speech-1.4:alex"
+      name: "Alex（男声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:benjamin"
+      name: "Benjamin（男声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:charles"
+      name: "Charles（男声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:david"
+      name: "David（男声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:anna"
+      name: "Anna（女声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:bella"
+      name: "Bella（女声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:claire"
+      name: "Claire（女声）"
+      language: [ "zh-Hans", "en-US" ]
+    - mode: "fishaudio/fish-speech-1.4:diana"
+      name: "Diana（女声）"
+      language: [ "zh-Hans", "en-US" ]
+  audio_type: 'mp3'
+  max_workers: 5
+  # stream: false
+pricing:
+  input: '0.015'
+  output: '0'
+  unit: '0.001'
+  currency: RMB

api/core/model_runtime/model_providers/siliconflow/tts/tts.py

+import concurrent.futures
+from typing import Any, Optional
+
+from openai import OpenAI
+
+from core.model_runtime.errors.invoke import InvokeBadRequestError
+from core.model_runtime.errors.validate import CredentialsValidateFailedError
+from core.model_runtime.model_providers.__base.tts_model import TTSModel
+from core.model_runtime.model_providers.openai._common import _CommonOpenAI
+
+
+class SiliconFlowText2SpeechModel(_CommonOpenAI, TTSModel):
+    """
+    Model class for SiliconFlow Speech to text model.
+    """
+
+    def _invoke(
+        self, model: str, tenant_id: str, credentials: dict, content_text: str, voice: str, user: Optional[str] = None
+    ) -> Any:
+        """
+        _invoke text2speech model
+
+        :param model: model name
+        :param tenant_id: user tenant id
+        :param credentials: model credentials
+        :param content_text: text content to be translated
+        :param voice: model timbre
+        :param user: unique user id
+        :return: text translated to audio file
+        """
+        if not voice or voice not in [
+            d["value"] for d in self.get_tts_model_voices(model=model, credentials=credentials)
+        ]:
+            voice = self._get_model_default_voice(model, credentials)
+        # if streaming:
+        return self._tts_invoke_streaming(model=model, credentials=credentials, content_text=content_text, voice=voice)
+
+    def validate_credentials(self, model: str, credentials: dict, user: Optional[str] = None) -> None:
+        """
+        validate credentials text2speech model
+
+        :param model: model name
+        :param credentials: model credentials
+        :param user: unique user id
+        :return: text translated to audio file
+        """
+        try:
+            self._tts_invoke_streaming(
+                model=model,
+                credentials=credentials,
+                content_text="Hello SiliconFlow!",
+                voice=self._get_model_default_voice(model, credentials),
+            )
+        except Exception as ex:
+            raise CredentialsValidateFailedError(str(ex))
+
+    def _tts_invoke_streaming(self, model: str, credentials: dict, content_text: str, voice: str) -> Any:
+        """
+        _tts_invoke_streaming text2speech model
+
+        :param model: model name
+        :param credentials: model credentials
+        :param content_text: text content to be translated
+        :param voice: model timbre
+        :return: text translated to audio file
+        """
+        try:
+            # doc: https://docs.siliconflow.cn/capabilities/text-to-speech
+            self._add_custom_parameters(credentials)
+            credentials_kwargs = self._to_credential_kwargs(credentials)
+            client = OpenAI(**credentials_kwargs)
+            model_support_voice = [
+                x.get("value") for x in self.get_tts_model_voices(model=model, credentials=credentials)
+            ]
+            if not voice or voice not in model_support_voice:
+                voice = self._get_model_default_voice(model, credentials)
+            if len(content_text) > 4096:
+                sentences = self._split_text_into_sentences(content_text, max_length=4096)
+                executor = concurrent.futures.ThreadPoolExecutor(max_workers=min(3, len(sentences)))
+                futures = [
+                    executor.submit(
+                        client.audio.speech.with_streaming_response.create,
+                        model=model,
+                        response_format="mp3",
+                        input=sentences[i],
+                        voice=voice,
+                    )
+                    for i in range(len(sentences))
+                ]
+                for future in futures:
+                    yield from future.result().__enter__().iter_bytes(1024)  # noqa:PLC2801
+
+            else:
+                response = client.audio.speech.with_streaming_response.create(
+                    model=model, voice=voice, response_format="mp3", input=content_text.strip()
+                )
+
+                yield from response.__enter__().iter_bytes(1024)  # noqa:PLC2801
+        except Exception as ex:
+            raise InvokeBadRequestError(str(ex))
+
+    @classmethod
+    def _add_custom_parameters(cls, credentials: dict) -> None:
+        credentials["openai_api_base"] = "https://api.siliconflow.cn"
+        credentials["openai_api_key"] = credentials["api_key"]