feat: Add interface for accessing icons with Ionic

[Lexpeartha]

🆒 Your use case

When using icons while creating an app, what you usually do is with ion-icon you specify your icons like this:

<ion-icons name="home" />

or if you would like a little more type-safety for example:

import { home, homeSharp } from 'ionicons/icons'

// Just one icon
<ion-icons :name="home" />
// Or to specify for different platforms
<ion-icons :md="home" :ios="homeSharp" />

🆕 The solution you'd like

I think it would be great if nuxt-ionic could expose unified interface from which we could access all icons in typesafe way

🔍 Alternatives you've considered

Let's say interface Ionicon is auto-imported, then my proposition would look something like this

<ion-icons :md="Ionicon.home.regular" :ios="Ionicon.home.sharp" />

This seems a bit more verbose than previous type-safe solution, but requires less boilerplate and less looking up certain strings on the official website

ℹ️ Additional info

No response