Add experimental support for Dify

[uezo]

You can use the Dify API instead of a specific LLM's API. This eliminates the need to manage code for tools or RAG locally.

from aiavatar import AIAvatar
from aiavatar.processors.dify import DifyProcessor

chat_processor_dify = DifyProcessor(
    api_key=DIFY_API_KEY,
    user=DIFY_USER
)

app = AIAvatar(
    google_api_key=GOOGLE_API_KEY,
    chat_processor=chat_processor_dify
)

app.start_listening_wakeword()