Add Reddit API wrapper and related tests; update environment configuration

.env.example

@@ -10,11 +10,11 @@ GOOGLE_API_KEY=
 # Configurazioni per gli agenti di mercato
 ###############################################################################
 
-# Ottenibili da: https://portal.cdp.coinbase.com/access/api
+# https://portal.cdp.coinbase.com/access/api
 CDP_API_KEY_NAME=
 CDP_API_PRIVATE_KEY=
 
-# Ottenibile da: https://www.cryptocompare.com/cryptopian/api-keys
+# https://www.cryptocompare.com/cryptopian/api-keys
 CRYPTOCOMPARE_API_KEY=
 
 # Binance API per Market Agent (alternativa)
@@ -25,8 +25,16 @@ BINANCE_API_SECRET=
 # Configurazioni per gli agenti di notizie
 ###############################################################################
 
-# Ottenibile da: https://newsapi.org/docs
+# https://newsapi.org/docs
 NEWS_API_KEY=
 
-# Ottenibile da: https://cryptopanic.com/developers/api/
+# https://cryptopanic.com/developers/api/
 CRYPTOPANIC_API_KEY=
+
+###############################################################################
+# Configurazioni per API di social media
+###############################################################################
+
+# https://www.reddit.com/prefs/apps
+REDDIT_API_CLIENT_ID=
+REDDIT_API_CLIENT_SECRET=