fix(core): update

ts/smartclickhouse.classes.smartclickhouse.ts

@@ -7,6 +7,12 @@ export interface IClickhouseConstructorOptions {
   database: string;
   username?: string;
   password?: string;
+  /**
+   * allow services to exit when waiting for clickhouse startup
+   * this allows to leave the lifecycle flow to other processes
+   * like a listening server.
+   */
+  unref?: boolean;
 }
 
 export class SmartClickHouseDb {
@@ -44,7 +50,7 @@ export class SmartClickHouseDb {
       });
       if (!available) {
         console.log(`NOT OK: tried pinging ${this.options.url}... Trying again in 5 seconds.`);
-        await plugins.smartdelay.delayFor(5000);
+        await plugins.smartdelay.delayFor(5000, null, this.options.unref);
       }
     }
   }