feat: implement identity authentication, authorization policies, and MAUI platform support with Docker orchestration

src/NexusReader.Web.New/appsettings.json

@@ -1,4 +1,8 @@
 {
+  "Stripe": {
+    "ApiKey": "sk_test_placeholder",
+    "WebhookSecret": "whsec_placeholder"
+  },
   "Logging": {
     "LogLevel": {
       "Default": "Information",
@@ -7,7 +11,8 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "SqliteConnection": "Data Source=nexus.db"
+    "SqliteConnection": "Data Source=nexus.db",
+    "PostgresConnection": "Host=localhost;Database=nexus_db;Username=nexus_user;Password=nexus_password"
   },
   "Authentication": {
     "Google": {