Refactor Predictor and market data handling

- Added Predictor class with input preparation and instructions for financial strategy generation.
- Removed PredictorAgent class and integrated its functionality into the new Predictor module.
- Created a base market API wrapper and specific implementations for Coinbase and CryptoCompare.
- Introduced PublicBinanceAgent for fetching public prices from Binance.
- Refactored ToolAgent to utilize the new Predictor and market API wrappers for improved data handling and predictions.
- Updated models to streamline the selection of available LLM providers.
- Removed deprecated signer classes for Coinbase and CryptoCompare.

.env.example

@@ -1,3 +1,7 @@
+###########################################################################
+# Configurazioni per i modelli di linguaggio
+###############################################################################
+
 # Alcune API sono a pagamento, altre hanno un piano gratuito con limiti di utilizzo
 # Vedi https://docs.agno.com/examples/models per vedere tutti i modelli supportati
 GOOGLE_API_KEY=
@@ -8,17 +12,18 @@ GOOGLE_API_KEY=
 # wsl: /usr/share/ollama/.ollama
 OLLAMA_MODELS_PATH=
 
+###############################################################################
+# Configurazioni per gli agenti di mercato
+###############################################################################
+
 # Coinbase CDP API per Market Agent
 # Ottenibili da: https://portal.cdp.coinbase.com/access/api
-CDP_API_KEY_NAME=organizations/your-org-id/apiKeys/your-key-id
-CDP_API_PRIVATE_KEY=-----BEGIN EC PRIVATE KEY-----
-YOUR_ACTUAL_PRIVATE_KEY_HERE
------END EC PRIVATE KEY-----
+CDP_API_KEY_NAME=
+CDP_API_PRIVATE_KEY=
 
 # CryptoCompare API per Market Agent (alternativa)
 # Ottenibile da: https://www.cryptocompare.com/cryptopian/api-keys
 CRYPTOCOMPARE_API_KEY=
-CRYPTOCOMPARE_AUTH_METHOD=query
 
 # Binance API per Market Agent (alternativa)
 BINANCE_API_KEY=