Component event type check

[jasonlyu123]

Is your feature request related to a problem? Please describe.
Current component type check can only check if it is (e: Event) => any

Describe the solution you'd like

1. Event forward like <button on:click /> can have type check in consumer component
2. Can type check for event dispatched by event-dispatcher

Describe alternatives you've considered
if the event dispatched by event-dispatcher can't be type-check or it is dispatched by an imported function provides a way to manually define the event's type. For example:

interface $$ComponentEventDef {
    'some-event': CustomEvent<number>
}

[dummdidumm]

Closing in favor of #424