Add webp thumbnail conversion task to optimize performance of fast scrolling (#172)

* Update readme

* Added webp to table and entity

* Added cronjob and sharp dependencies

* Added conversion of webp every 5 minutes and endpoint will now server webp image if exist

server/src/modules/schedule-tasks/schedule-tasks.module.ts

@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { AssetEntity } from '../../api-v1/asset/entities/asset.entity';
+import { ImageConversionService } from './image-conversion.service';
+
+@Module({
+  imports: [
+    TypeOrmModule.forFeature([AssetEntity]),
+  ],
+  providers: [ImageConversionService],
+})
+export class ScheduleTasksModule { }