feat(api): add protected connect account endpoint

src/FiscalOS.API/Accounts/AccountsExtensions.cs

@@ -0,0 +1,15 @@
+namespace FiscalOS.API.Accounts;
+
+internal static class AccountsExtensions
+{
+  private const string RouteGroupPrefix = "/accounts";
+
+  public static RouteGroupBuilder MapAccountsEndpoints(this WebApplication app)
+  {
+    var accountsGroup = app.MapGroup(RouteGroupPrefix).RequireAuthorization();
+
+    accountsGroup.MapConnectEndpoint();
+
+    return accountsGroup;
+  }
+}