[AAE-534] Core - add search cloud component (#5193)

* [AAE-534] - add search cloud component

* change doc file

* more changes on doc file

* remove empty scss file

* add animation and more customizations

* add preselect value property

* fix unit tests

lib/core/models/search-cloud.model.ts

@@ -0,0 +1,38 @@
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ import { SearchTextCloudComponent } from '../search-cloud/components/search-text-cloud/search-text-cloud.component';
+
+ export interface SearchCloudProperties {
+    value?: string;
+    placeholder?: string;
+    debounceTime?: number;
+    expandable?: boolean;
+ }
+
+ export enum SearchCloudTypesEnum {
+    text = 'text'
+ }
+
+ export const SEARCH_CLOUD_TYPES = {
+    text: SearchTextCloudComponent
+ };
+
+ export interface SearchCloudWidget {
+    properties: SearchCloudProperties;
+    onChangedHandler(event: any);
+ }