[App Configuration] Update configuration for TS (#42235)

Add JS specific customizations

Author: minhanh-phan

specification/appconfiguration/data-plane/AppConfiguration/client.tsp

@@ -20,6 +20,7 @@ namespace SdkCustomizations;
 @@access(putKeyValue, Access.internal, "python");
 @@access(updateSnapshot, Access.internal, "python");
 @@access(SnapshotUpdateParameters, Access.public, "python");
+@@clientName(Azure.Core.Foundations.Error, "CommonError", "python");
 
 // .NET specific customizations
 @@clientName(getKeyValue, "GetConfigurationSetting", "csharp");
@@ -43,4 +44,18 @@ namespace SdkCustomizations;
 @@alternateType(KeyValuesRequestParams.select, string[], "csharp");
 @@alternateType(RevisionsRequestParams.select, string[], "csharp");
 
-@@clientName(Azure.Core.Foundations.Error, "CommonError", "python");
+// TypeScript specific customizations
+@@clientName(Snapshot.expires, "expiresOn", "javascript");
+@@clientName(Snapshot.created, "createdOn", "javascript");
+@@clientName(
+  Snapshot.retentionPeriod,
+  "retentionPeriodInSeconds",
+  "javascript"
+);
+@@clientName(Snapshot.size, "sizeInBytes", "javascript");
+@@clientName(KeyValueFilter.key, "keyFilter", "javascript");
+@@clientName(KeyValueFilter.label, "labelFilter", "javascript");
+@@clientName(KeyValueFilter.tags, "tagsFilter", "javascript");
+@@clientName(KeyValueFilter, "ConfigurationSettingsFilter", "javascript");
+@@clientName(Snapshot, "ConfigurationSnapshot", "javascript");
+@@clientName(AzureAppConfiguration, "AppConfigurationClient", "javascript");

specification/appconfiguration/data-plane/AppConfiguration/tspconfig.yaml

@@ -30,12 +30,11 @@ options:
     namespace: Azure.Data.AppConfiguration
     model-namespace: false
   "@azure-tools/typespec-ts":
-    emitter-output-dir: "{output-dir}/{service-dir}/azure-appconfiguration-rest"
-    generate-metadata: true
-    is-modular-library: false
+    emitter-output-dir: "{output-dir}/{service-dir}/app-configuration"
+    generate-metadata: false
+    is-modular-library: true
     package-details:
-      name: "@azure-rest/azure-appconfiguration"
-      description: "Azure App Configuration"
+      name: "@azure/app-configuration"
     flavor: azure
   "@azure-tools/typespec-java":
     emitter-output-dir: "{output-dir}/{service-dir}/azure-data-appconfiguration"