Implement Turnstile captcha for petition signing and add tweet prompt modal

Submission.Api/appsettings.Development.json

@@ -1,8 +1,19 @@
 {
+  "Turnstile": {
+    "SecretKey": "your-turn"
+  },
+  "PetitionSettings": {
+    "AllowPetitionCreation": true
+  },
+  "MongoDbSettings": {
+    "ConnectionString": "mongodb://localhost:27017",
+    "DatabaseName": "petition_database"
+  },
   "Logging": {
     "LogLevel": {
       "Default": "Information",
       "Microsoft.AspNetCore": "Warning"
     }
-  }
+  },
+  "AllowedHosts": "*"
 }