add some indices to increase performance

src/logging/models/logentry.model.ts

@@ -7,12 +7,14 @@ export type LogEntryDocument = LogEntry & Document;
 export class LogEntry {
   @Prop({
     required: true,
+    index: true,
     type: String,
   })
   component: string;
 
   @Prop({
     required: true,
+    index: true,
     enum: ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
     type: String,
   })