[ADF-2540] Lock node feature (#3138)

* add adf-node-lock directive

* add lock-node service + button in context menu

* unit tests

* docs

* unit tests fix

* Remove unnecessary imports

* PR changes

* Remove fit from tests

* Update specific node from list on lock/ulock

lib/core/models/permissions.enum.ts

@@ -20,6 +20,7 @@ export class PermissionsEnum extends String {
     static UPDATE: string = 'update';
     static CREATE: string = 'create';
     static COPY: string = 'copy';
+    static LOCK: string = 'lock';
     static UPDATEPERMISSIONS: string = 'updatePermissions';
     static NOT_DELETE: string = '!delete';
     static NOT_UPDATE: string = '!update';