add support for TTS model (#2095)

### What problem does this PR solve?

add support for TTS model
#1853

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

web/src/locales/en.ts

@@ -490,6 +490,9 @@ The above is the content you need to summarize.`,
         'The default ASR model all the newly created knowledgebase will use. Use this model to translate voices to corresponding text.',
       rerankModel: 'Rerank Model',
       rerankModelTip: `The default rerank model is used to rerank chunks retrieved by users' questions.`,
+      ttsModel: 'TTS Model',
+      ttsModelTip:
+        'The default TTS model will be used to generate speech during conversations upon request.',
       workspace: 'Workspace',
       upgrade: 'Upgrade',
       addLlmTitle: 'Add LLM',
@@ -502,6 +505,7 @@ The above is the content you need to summarize.`,
       baseUrlNameMessage: 'Please input your base url!',
       vision: 'Does it support Vision?',
       ollamaLink: 'How to integrate {{name}}',
+      FishAudioLink: 'How to use FishAudio',
       volcModelNameMessage: 'Please input your model name!',
       addEndpointID: 'EndpointID of the model',
       endpointIDMessage: 'Please input your EndpointID of the model',
@@ -533,6 +537,13 @@ The above is the content you need to summarize.`,
       yiyanAKMessage: 'Please input your API KEY',
       addyiyanSK: 'yiyan Secret KEY',
       yiyanSKMessage: 'Please input your Secret KEY',
+      FishAudioModelNameMessage:
+        'Please give your speech synthesis model a name',
+      addFishAudioAK: 'Fish Audio API KEY',
+      addFishAudioAKMessage: 'Please input your API KEY',
+      addFishAudioRefID: 'FishAudio Refrence ID',
+      addFishAudioRefIDMessage:
+        'Please input the Reference ID (leave blank to use the default model).',
     },
     message: {
       registered: 'Registered!',