For given function type F, and any type A (any in this context means we don't restrict the type, and I don't have in mind any type 😉) create a generic type which will take F as first argument, A as second and will produce function type G which will be the same as F but with appended argument A as a first one.

// lets say we have some function type
type SomeF = (a: number, b: string) => number
// and we have our utility type
type AppendArgument<F, A> = ... here your code 💪

type FinalF = AppendArgument<SomeF, boolean> 
// FinalF should be (x: boolean, a: number, b: string) => number

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