DeepPick

by hiroya iizuka @hiroyaiizuka

Implement a type DeepPick, that extends Utility types `Pick`. A type takes two arguments. For example: ```ts type obj = { name: 'hoge', age: 20, friend: { name: 'fuga', age: 30, family: { name: 'baz', age: 1 } } } type T1 = DeepPick // { name : 'hoge' } type T2 = DeepPick // { name : 'hoge' } & { friend: { name: 'fuga' }} type T3 = DeepPick // { name : 'hoge' } & { friend: { name: 'fuga' }} & { friend: { family: { name: 'baz' }}} ```