feat: add deepPick method

[nullsploit01]

Scope of change: added deepPick method that receives an object with nested properties and an array of keys and returns a new object with only the keys specified.

Key File: objects.ts

Notes This closes #34

[matheus-rodrigues00]

Awesome code, @NullSploit01 !!

// mind-blowing type 🤯
type DeepKeys<T> = T extends object
  ? T extends infer O
    ? { [K in keyof O]: K | `${K & string}.${DeepKeys<O[K]>}` }[keyof O]
    : never
  : never;