Remove the requirement of overriding boot and shutdown methods in the microservice package

packages/microservice/src/InternalService.ts

@@ -32,12 +32,16 @@ export abstract class InternalService<T extends Microservice = Microservice>
 	/**
 	 * Boot the service
 	 */
-	public abstract boot(): Promise<void>;
+	public async boot(): Promise<void> {
+		// no-op
+	}
 
 	/**
 	 * Shut the application down
 	 */
-	 public abstract shutdown(): Promise<void>;
+	 public async shutdown(): Promise<void> {
+		 // no-op
+	 }
 
 	 // Miscellaneous ------------------------------------------------------------------------------