Add minimal Microsoft.Barbie RP (no lease)

specification/barbie/cspell.yaml

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+words:
+  - barbie

specification/barbie/resource-manager/Microsoft.Barbie/Barbie/main.tsp

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+import "@typespec/http";
+import "@typespec/rest";
+import "@typespec/versioning";
+import "@azure-tools/typespec-azure-core";
+import "@azure-tools/typespec-azure-resource-manager";
+
+using TypeSpec.Http;
+using TypeSpec.Rest;
+using TypeSpec.Versioning;
+using Azure.Core;
+using Azure.ResourceManager;
+
+/** Microsoft.Barbie Resource Provider management API. */
+@armProviderNamespace
+@service(#{ title: "Barbie" })
+@versioned(Microsoft.Barbie.Versions)
+namespace Microsoft.Barbie;
+
+/** The available API versions. */
+enum Versions {
+  /** 2024-01-01-preview version */
+  @armCommonTypesVersion(Azure.ResourceManager.CommonTypes.Versions.v5)
+  v2024_01_01_preview: "2024-01-01-preview",
+}
+
+interface Operations extends Azure.ResourceManager.Operations {}
+
+/** A Barbie resource */
+model BarbieResource is TrackedResource<BarbieProperties> {
+  ...ResourceNameParameter<BarbieResource>;
+}
+
+/** Barbie resource properties */
+model BarbieProperties {
+  /** Display name */
+  displayName?: string;
+
+  /** The provisioning state */
+  @visibility(Lifecycle.Read)
+  provisioningState?: ProvisioningState;
+}
+
+/** The resource provisioning state. */
+@lroStatus
+union ProvisioningState {
+  ResourceProvisioningState,
+
+  /** The resource is being provisioned */
+  Provisioning: "Provisioning",
+
+  string,
+}
+
+@armResourceOperations
+interface BarbieResources {
+  get is ArmResourceRead<BarbieResource>;
+  createOrUpdate is ArmResourceCreateOrReplaceAsync<BarbieResource>;
+  delete is ArmResourceDeleteWithoutOkAsync<BarbieResource>;
+  listByResourceGroup is ArmResourceListByParent<BarbieResource>;
+  listBySubscription is ArmListBySubscription<BarbieResource>;
+}