Plugins support

[rumkin]

Make plugins support with Options builder class. Which has instance method Options#toObject() which returns Pill constructor's options argument.

type OptionsObj = {
  // Pill's constructor options props
}

class Options {
  toObject(): OptionsObj;
}

It allows implement custom Pill configurations, including extensible with plugins.

Related questions:

• Plugin template repository.
• Homogeneous plugin structure.