Extension feature: Component template

## Feature Request

My idea is to have a new feature for the dioxus extension that allows you to create a new file with a component template.

## Implement Suggestion

- Add an option in the right click menu in the vscode file explorer panel "New Component"
- When the user clicks, it prompts the user for the name of the component
- The new .rs file is added that looks like this:
```rust
use dioxus::prelude::*;

#[component]
pub fn MyComponent() -> Element {
rsx! {
}
}
}
```
- mod.rs is updated or added if it doesn't exist