added CUSTOM_ELEMENTS_SCHEMA in subird video player module

Author: Deeksha1502

projects/sunbird-video-player/src/lib/sunbird-video-player.module.ts

@@ -1,4 +1,4 @@
-import { NgModule } from '@angular/core';
+import { NgModule, CUSTOM_ELEMENTS_SCHEMA} from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { FormsModule } from '@angular/forms';
 import { SunbirdPlayerSdkModule  } from '@project-sunbird/sunbird-player-sdk-v9';
@@ -18,6 +18,7 @@ import { QumlLibraryModule } from '@project-sunbird/sunbird-quml-player-v9';
     QumlLibraryModule,
   ],
   providers: [ErrorService],
-  exports: [SunbirdVideoPlayerComponent , SunbirdPlayerSdkModule]
+  exports: [SunbirdVideoPlayerComponent , SunbirdPlayerSdkModule],
+  schemas: [CUSTOM_ELEMENTS_SCHEMA]
 })
 export class SunbirdVideoPlayerModule { }