Added Febraban Type

[devdiogenes]

"Boleto" is the one of the most used payment methods in Brazil.

Febraban is the type of barcode used in boletos. It's is basically a interleaved of 2:5, but the digits order is different, then I ajusted to generate barcode in that order.

[casperbakker]

@diogenes-souza-dev Would love to add this. Please add some basic tests for this barcode type and I will merge it.

[devdiogenes]

Ok, I will do it soon

[devdiogenes]

A boleto has a code and a barcode. The barcode has a differente value of the code.
Let's suppose that someone wants to develop a new document that contains the barcode of a boleto, typing only the code.

For this example, I generated a R$ 200,00 document.

That is the code: 07797.77705 11661.514114 78006.780429 1 92180000020000

That is the barcode:

And that is the value of barcode: 07791921800000200007777011661514117800678042

As you can see, the barcode value is very different of the code, It remove spaces, dots and some numbers, and changes the order of the numbers.

Then I will simulate that someone wants to generate this barcode, by only typing the code:

That is the result:

After trying to pay it using the barcode I generated, that was the result of the digital bank:

As you can see, I can pay sussessfully a boleto barcode that I generate only using the number of the boleto.

[epcgrs]

@devdiogenes @casperbakker I tested the code too, all its good, I guess we can merge this

my tests:

[casperbakker]

I am sorry, but the code itself does not have unit tests for this type. Please add tests like the ones in https://github.com/picqer/php-barcode-generator/tree/main/tests, at least you need a verified file for this type so it will be automatically test. That way we know for sure that it will keep working in the future.

[epcgrs]

Ok of course, I'll try to contribute to this PR then and add the unit tests when I get a little time