[feature] functional bean support `Option` return type

[ninthakeey]

Option return type should be well unwarped or other operations.

When the return type is Option<T>

• if the return value is Some(T), then the bean will be submitted and type name is T
• if the return value is None, then the bean will not be submitted

[ninthakeey]

The feature has been added, 1c46865