feat: add the audio tool

[hjlarry]

Summary

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Close issue syntax: Fixes #<issue number> or Resolves #<issue number>, see documentation for more details.

Currently, the tts and speech2text only available in a chat. I think make it as a tool can help people do something like generate audio story/podcast...

Close #10694

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Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[hjlarry]

some people use http node to do this #10694

[fdb02983rhy]

Please notice it will raise IndexError when user's available TTS or ASR model are empty.

api-1         | Traceback (most recent call last):
api-1         |   File "/app/api/.venv/lib/python3.10/site-packages/flask/app.py", line 880, in full_dispatch_request
api-1         |     rv = self.dispatch_request()
api-1         |   File "/app/api/.venv/lib/python3.10/site-packages/flask/app.py", line 865, in dispatch_request
api-1         |     return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
api-1         |   File "/app/api/.venv/lib/python3.10/site-packages/flask_restful/__init__.py", line 489, in wrapper
api-1         |     resp = resource(*args, **kwargs)
api-1         |   File "/app/api/.venv/lib/python3.10/site-packages/flask/views.py", line 110, in view
api-1         |     return current_app.ensure_sync(self.dispatch_request)(**kwargs)  # type: ignore[no-any-return]
api-1         |   File "/app/api/.venv/lib/python3.10/site-packages/flask_restful/__init__.py", line 604, in dispatch_request
api-1         |     resp = meth(*args, **kwargs)
api-1         |   File "/app/api/controllers/console/wraps.py", line 142, in decorated
api-1         |     return view(*args, **kwargs)
api-1         |   File "/app/api/libs/login.py", line 92, in decorated_view
api-1         |     return current_app.ensure_sync(func)(*args, **kwargs)
api-1         |   File "/app/api/controllers/console/wraps.py", line 26, in decorated
api-1         |     return view(*args, **kwargs)
api-1         |   File "/app/api/controllers/console/workspace/tool_providers.py", line 502, in get
api-1         |     for provider in BuiltinToolManageService.list_builtin_tools(
api-1         |   File "/app/api/services/tools/builtin_tools_manage_service.py", line 245, in list_builtin_tools
api-1         |     raise e
api-1         |   File "/app/api/services/tools/builtin_tools_manage_service.py", line 235, in list_builtin_tools
api-1         |     ToolTransformService.tool_to_user_tool(
api-1         |   File "/app/api/services/tools/tools_transform_service.py", line 245, in tool_to_user_tool
api-1         |     runtime_parameters = tool.get_runtime_parameters() or []
api-1         |   File "/app/api/core/tools/provider/builtin/audio/tools/tts.py", line 86, in get_runtime_parameters
api-1         |     default=options[0].value,
api-1         | IndexError: list index out of range

@hjlarry @crazywoola

[hjlarry]

Please notice it will raise IndexError when user's available TTS or ASR model are empty.

thanks, I will fix this later