Add Use Statements in the Guide

[Android789515]

Feature Request

Going through the guide it doesn't show any use statements to bring items into scope. This means when you enter the code it you just get errors saying dioxus_thing is undeclared.

Code in the Guide:

Error:

Code in the Guide:

Errors:

After adding use statement:

Have to add another use statement:

Implement Suggestion

Show relevant use statements to the code provided in the guide.

[chungwong]

MOST of the time, use dioxus::prelude::* will cover your cases, especially in guides/tutorials.