feat: Worker Service - API endpoints

Implement and configure Worker Service to orchestrate data fetchers - Implement API endpoints for stock market data

src/Mercados.Worker/appsettings.json

@@ -2,7 +2,18 @@
   "Logging": {
     "LogLevel": {
       "Default": "Information",
-      "Microsoft.Hosting.Lifetime": "Information"
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "ConnectionStrings": {
+    "DefaultConnection": "Server=TECNICA3;Database=MercadosDb;User Id=mercadosuser;Password=@mercados1351@;Trusted_Connection=False;Encrypt=False;"
+  },
+  "ApiKeys": {
+    "Finnhub": "cuvhr0hr01qs9e81st2gcuvhr0hr01qs9e81st30",
+    "Bcr": {
+      "Key": "D1782A51-A5FD-EF11-9445-00155D09E201",
+      "Secret": "da96378186bc5a256fa821fbe79261ec7172dec283214da0aacca41c640f80e3"
     }
   }
-}
+}