Add TBody to Mutate to be able to type the body

[fabien0102]

Is your feature request related to a problem? Please describe.
Actually we can't type the body when we are using the Mutate component.

Describe the solution you'd like

// My `TBody`
interface HamburgerBody {
  size?: "small" | "normal" | "large" | "xlarge";
  haveOnions?: boolean;
  meatType?: "pork" | "beaf" | "dog"
}

<Mutate<TData, TError, HamburgerBody> verb="POST" path="/find-the-best-burger">
  {findTheBestBurger => (
    <button onClick={() => findTheBestBurger({size: "xlarge", haveOnions: true})}>
       I'm starving
     </button>)}
</Mutate>

Additional context
This will be very very useful and powerful in combinaison of the open-api generator (#28)

[TejasQ]

+1

[fabien0102]

Implemented in 813e41c (#28)

[TejasQ]

TIME TO CHERRY PICK 🍒