[AAE-11695] move version compatibility directive and service (#8038)

* [AAE-11695] move version compatibility directive

* [AAE-11695] remove spare readme section

lib/content-services/src/lib/version-compatibility/version-compatibility.directive.ts

@@ -0,0 +1,48 @@
+/*!
+ * @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 { Directive, Input, ViewContainerRef, TemplateRef } from '@angular/core';
+import { VersionCompatibilityService } from './version-compatibility.service';
+import { take } from 'rxjs/operators';
+
+@Directive({
+    selector: '[adf-acs-version]'
+})
+export class VersionCompatibilityDirective {
+
+    /** Minimum version required for component to work correctly . */
+    @Input('adf-acs-version')
+    set version(requiredVersion: string) {
+        this.validateAcsVersion(requiredVersion);
+    }
+
+    constructor(
+        private templateRef: TemplateRef<any>,
+        private viewContainer: ViewContainerRef,
+        private versionCompatibilityService: VersionCompatibilityService
+    ) {
+    }
+
+    private validateAcsVersion(requiredVersion: string) {
+        this.versionCompatibilityService.acsVersionInitialized$.pipe(take(1)).subscribe(() => {
+            this.viewContainer.clear();
+            if (requiredVersion && this.versionCompatibilityService.isVersionSupported(requiredVersion)) {
+                this.viewContainer.createEmbeddedView(this.templateRef);
+            }
+        });
+    }
+}