Add support for jobs & queueables, migrations

- Create migration directives & migrators
- Modify Cache classes to support array manipulation
- Create Redis unit and RedisCache implementation
- Create Queueable base class and Queue class that uses Cache backend

src/orm/directive/RollbackDirective.ts

@@ -3,8 +3,8 @@ import {Container, Inject, Injectable} from '../../di'
 import {EventBus} from '../../event/EventBus'
 import {Migrator} from '../migrations/Migrator'
 import {Migrations} from '../services/Migrations'
-import {RollingBackMigrationEvent} from '../migrations/events/RollingBackMigrationEvent'
-import {RolledBackMigrationEvent} from '../migrations/events/RolledBackMigrationEvent'
+// import {RollingBackMigrationEvent} from '../migrations/events/RollingBackMigrationEvent'
+// import {RolledBackMigrationEvent} from '../migrations/events/RolledBackMigrationEvent'
 import {EventSubscription} from '../../event/types'
 import {NothingToMigrateError} from '../migrations/NothingToMigrateError'
 
@@ -85,13 +85,13 @@ export class RollbackDirective extends Directive {
      * @protected
      */
     protected async registerListeners(): Promise<void> {
-        this.subscriptions.push(await this.bus.subscribe(RollingBackMigrationEvent, event => {
-            this.info(`Rolling-back migration ${event.migration.identifier}...`)
-        }))
-
-        this.subscriptions.push(await this.bus.subscribe(RolledBackMigrationEvent, event => {
-            this.success(`Rolled-back migration: ${event.migration.identifier}`)
-        }))
+        // this.subscriptions.push(await this.bus.subscribe(RollingBackMigrationEvent, event => {
+        //     this.info(`Rolling-back migration ${event.migration.identifier}...`)
+        // }))
+        //
+        // this.subscriptions.push(await this.bus.subscribe(RolledBackMigrationEvent, event => {
+        //     this.success(`Rolled-back migration: ${event.migration.identifier}`)
+        // }))
     }
 
     /** Remove event bus listeners before finish. */