Support HTTP via server_chat()

[reycn]

Description

In this PR, I add a new function server_chat() within the class Chat to support HTTP interactions:

• GET and POST supported
• Async supported
• Conversations based on HTTP, not yet
• Special characters management, not yet

Please note that:

1. the properties and the initialization of class Chat is changed to circumvent router issues introduced by Fastapi decorations;
2. current version lacks special characters management, so some requests containing unusual characters (e.g. /) might not be properly parsed (will be fixed later).

Augmented requirements:

• uvicron, to enable server
• fastapi, to create api

Usage and design

from pychatgpt import Chat

chat = Chat(email="email", password="password")
chat.server_chat() # host:str="127.0.0.1", port:int=8000

Click to toggle HTTP requests and answers >>

1. GET http://host:port/{prompt} returns a JSONResponse

{
    "answer": "{answer}",
    "conversation": "{conversation_id}"
}

3. POST http://host:port/ with an application/json body of

{
    "prompt": "{prompt}",
    "conversation": "{conversation_id}" (optional)
}

returns a JSONResponse

{
    "answer": "{answer}",
    "conversation": "{conversation_id}"
}

Note: conversation not implemented yet

[rawandahmad698]

I'll wait until it's finished then