Simple inflate from ViewGroup

[zTrap]

• create extension for inflate from ViewGroup

This is useful for creating RecyclerView.ViewHolder

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
    return ViewHolder(parent.inflate(R.layout.item))
}

[MGaetan89]

This already exists in #162

[zTrap]

@MGaetan89 Didn't see that one. My bad.