[Feature request] Toast notifications need an overhaul

[nvms]

What problem does this feature solve?

the current implementation is.. underwhelming.

Ideas:

• should look more similar to the Notification component
• the first argument to the VaToast method should be a string and it should be the only required argument, so that they can be instantiated as such:

this.VaToast('this is my toast message')

• should accept an optional config object where additional properties can be defined, such as:
  • description
  • duration
  • type
  • placement