[Feature request] Get "boleto" information from digitable line

[lucascarrias]

The "boleto"'s digitable line has some information about the charge, for example:

• Expiration date
• Charge Value
• Associate Bank code
• Currency code

With that considered, I suggest that we should create a single function to get all values as bellow:

{
  expirationDate: Date,
  valueInCents: number,
  bankCode: string,
  currency: string
}

An alternative feature is to create functions to get each "boleto" information:

  function getExpirationDate(boleto: string): Date
  function getValueInCents(boleto: string): number
  function getBankCode(boleto: string) : string
  function getCurrency(boleto: string): string

Reference:
Campos dos boletos e linha digitável: o que significam?
Código dos bancos associados - Febraban

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Edit: Add functions declaration examples

[hyanmandian]

I like your suggestion! Can you help us to create this function? I think getBoletoInfo it's a good name for that.

[lucascarrias]

@hyanmandian I got ahead and already started working on that. I was just waiting some feedback before creating a PR.

So, I'll create the getBoletoInfo function.