Add support for object destructuring in v-on

[maurop123]

What problem does this feature solve?

When declaring components, this sort of repetitive syntax occurs a lot:

<component @log="log" @alert="alert" />

This feature would allow event declarations to be more DRY, similar to the way v-bind currently works:

<component v-bind="{foo, bar}" />

What does the proposed API look like?

<component v-on="{log, alert}" />

[posva]

dup of #5578

[maurop123]

@posva although this issue is very similar to #5578, the difference between the proposed API of each one is significant, so can this issue be reopened?

[posva]

I see the same API with different examples: one using native events and other using custom events (with es6 object syntax)
Did I miss something?
We'll only keep one issue opened though, feel free to share your thoughts on the other issue 🙂