[PM-25379] Refactor org metadata (#6418)

* ignore serena

* removing unused properties from org metadata

* removing further properties that can already be fetched on the client side using available data

* new vnext endpoint for org metadata plus caching metadata first pass

including new feature flag

# Conflicts:
#	src/Core/Constants.cs

* [PM-25379] decided against cache and new query shouldn't use the service

* pr feedback

removing unneeded response model

* run dotnet format

src/Api/Billing/Controllers/OrganizationBillingController.cs

@@ -38,9 +38,7 @@ public class OrganizationBillingController(
             return Error.NotFound();
         }
 
-        var response = OrganizationMetadataResponse.From(metadata);
-
-        return TypedResults.Ok(response);
+        return TypedResults.Ok(metadata);
     }
 
     [HttpGet("history")]

src/Api/Billing/Controllers/VNext/OrganizationBillingVNextController.cs

@@ -4,6 +4,7 @@ using Bit.Api.Billing.Attributes;
 using Bit.Api.Billing.Models.Requests.Payment;
 using Bit.Api.Billing.Models.Requests.Subscriptions;
 using Bit.Api.Billing.Models.Requirements;
+using Bit.Core;
 using Bit.Core.AdminConsole.Entities;
 using Bit.Core.Billing.Commands;
 using Bit.Core.Billing.Organizations.Queries;
@@ -25,6 +26,7 @@ public class OrganizationBillingVNextController(
     ICreateBitPayInvoiceForCreditCommand createBitPayInvoiceForCreditCommand,
     IGetBillingAddressQuery getBillingAddressQuery,
     IGetCreditQuery getCreditQuery,
+    IGetOrganizationMetadataQuery getOrganizationMetadataQuery,
     IGetOrganizationWarningsQuery getOrganizationWarningsQuery,
     IGetPaymentMethodQuery getPaymentMethodQuery,
     IRestartSubscriptionCommand restartSubscriptionCommand,
@@ -113,6 +115,23 @@ public class OrganizationBillingVNextController(
         return Handle(result);
     }
 
+    [Authorize<MemberOrProviderRequirement>]
+    [HttpGet("metadata")]
+    [RequireFeature(FeatureFlagKeys.PM25379_UseNewOrganizationMetadataStructure)]
+    [InjectOrganization]
+    public async Task<IResult> GetMetadataAsync(
+        [BindNever] Organization organization)
+    {
+        var metadata = await getOrganizationMetadataQuery.Run(organization);
+
+        if (metadata == null)
+        {
+            return TypedResults.NotFound();
+        }
+
+        return TypedResults.Ok(metadata);
+    }
+
     [Authorize<MemberOrProviderRequirement>]
     [HttpGet("warnings")]
     [InjectOrganization]