Use gpt-4 by default for the main thought process

Allow specifying the llm through dotenv
Move more things into config

scripts/speak.py

@@ -1,20 +1,17 @@
 import os
 from playsound import playsound
 import requests
-from dotenv import load_dotenv
-
-
-# Load environment variables from .env file
-load_dotenv()
+from config import Config
+cfg = Config()
 
+# TODO: Nicer names for these ids
 voices = ["ErXwobaYiN019PkySvjV", "EXAVITQu4vr4xnSDxMaL"]
 
 tts_headers = {
     "Content-Type": "application/json",
-    "xi-api-key": os.getenv("ELEVENLABS_API_KEY")
+    "xi-api-key": cfg.elevenlabs_api_key
 }
 
-
 def say_text(text, voice_index=0):
     tts_url = "https://api.elevenlabs.io/v1/text-to-speech/{voice_id}".format(
         voice_id=voices[voice_index])