fix: Add config for models to transform ionic date format

[EndyKaufman]

ionic/libs/rucken/ionic/src/lib/models/custom-user.ts

Line 4 in d9efab3

export class CustomUser extends User {

sample

    @Transform(transformDateToString, { toClassOnly: true })
    @Transform(transformStringToDate, { toPlainOnly: true })
    createdAt: Date = undefined;