fix: correct leading zeros and add building number patterns for DE_de address provider 🐛

[KarelZe]

What does this change

This PR improves the building number generation for German addresses. Previously, we generated multi-digit building numbers with leading 0s, which do not exist in Germany. This pr also adds more patterns to better cover German building numbers.

In detail:

• omit generating leading zeros, for multi-digit building numbers like 010. Single zeros can be valid building number (see here: https://www.uniserv.com/wissen/magazin/article/besonderheiten-von-zustelladressen/)
• allow 4 digit building numbers, which appear quite frequently in larger cities e.g., Cologne (see here: https://www.faz.net/aktuell/gesellschaft/menschen/deutschlands-hoechste-hausnummer-bei-frau-hoechsten-ist-schluss-11741880.html)
• allow building number like 14-16, if property spans across multiple lots.

MWE

from faker import Faker
fake = Faker('de_DE')
for _ in range(100):
    print(fake.building_number())

before:

0/2
...
053
...
5/0
...
0/0

after:

0
17
438
185
98
29-28
52-84
7
1-9
6
13-43
78-20
62
75-79
11/67
47-78
95
60
739
67/88
5531
...

What was wrong

Pattern was wrong.

How this fixes it

It fixes the pattern for German building numbers and adds more patterns to sample from.

Checklist

• I have read the documentation about CONTRIBUTING
• I have read the documentation about Coding style
• I have run make lint