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.

src/app/markets/__init__.py

@@ -0,0 +1,29 @@
+import os
+from app.markets.base import BaseWrapper
+from app.markets.coinbase import CoinBaseWrapper
+from app.markets.cryptocompare import CryptoCompareWrapper
+
+# TODO Dare la priorità in base alla qualità del servizio
+# TODO Aggiungere altri wrapper se necessario
+def get_first_available_market_api(currency:str = "USD") -> BaseWrapper:
+    """
+    Restituisce il primo wrapper disponibile in base alle configurazioni del file .env e alle chiavi API presenti.
+    La priorità è data a Coinbase, poi a CryptoCompare.
+    Se non sono presenti chiavi API, restituisce una eccezione.
+    :param currency: Valuta di riferimento (default "USD")
+    :return: Lista di istanze di wrapper
+    """
+    wrappers = []
+
+    api_key = os.getenv("COINBASE_API_KEY")
+    api_secret = os.getenv("COINBASE_API_SECRET")
+    if api_key and api_secret:
+        wrappers.append(CoinBaseWrapper(api_key=api_key, api_private_key=api_secret, currency=currency))
+
+    api_key = os.getenv("CRYPTOCOMPARE_API_KEY")
+    if api_key:
+        wrappers.append(CryptoCompareWrapper(api_key=api_key, currency=currency))
+
+    assert wrappers, "No valid API keys set in environment variables."
+    return wrappers[0]
+