[ADF-5417] Support multiple search configuration in app config json (#7096)

* [ACS-1642] Support multiple search configuration in app config json

* [ci:force] unit test added

* adf component added

* [ci:force] check compatibility

* [ci:force] * run all e2e

* * revert initvalue

* [ci:force] revert app config

* [ci:force] docs update

lib/content-services/src/lib/search/models/search-widget.interface.ts

@@ -0,0 +1,32 @@
+/*!
+ * @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 { SearchWidgetSettings } from './search-widget-settings.interface';
+import { SearchQueryBuilderService } from '../search-query-builder.service';
+
+export interface SearchWidget {
+    id: string;
+    settings?: SearchWidgetSettings;
+    context?: SearchQueryBuilderService;
+    isActive?: boolean;
+    startValue: any;
+    reset();
+    submitValues();
+    hasValidValue();
+    getCurrentValue();
+    setValue(value: any);
+}