Add PostColor and content

app/Models/PostColor.ts

@@ -0,0 +1,19 @@
+import { DateTime } from 'luxon'
+import { BaseModel, column } from '@ioc:Adonis/Lucid/Orm'
+
+export default class PostColor extends BaseModel {
+  @column({ isPrimary: true })
+  public id: number
+
+  @column()
+  public name: string
+
+  @column()
+  public color: string
+
+  @column.dateTime({ autoCreate: true })
+  public createdAt: DateTime
+
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
+  public updatedAt: DateTime
+}