Like Partial<T> of TypeScript, makes all the properties of a struct type an optional property.
Provides Partial derive macro.
#[derive(Partial, Clone)]
#[partial_derive(Clone)]
struct SomeStruct {
pub field_one: i32,
field_two: Vec<bool>,
}generates
#[derive(Clone)]
struct PartialSomeStruct {
pub field_one: Option<i32>,
field_two: Option<Vec<bool>>,
}