Feature/311 validation country code

[danielmursa-dev]

Fixes #311

• Updated all land fields
• Added validate_country
• Created migrations, with nl_code_to_iso_code_country_converter (ISO 3166)

Created COUNTRIES_DICT in openklant/utils/constants.py, from https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://publicaties.rvig.nl/dsresource%3Fobjectid%3D7a15a0d7-7282-403c-92a8-397f0da23d44%26type%3Dpdf&ved=2ahUKEwiK6Z6ymeiKAxUT2AIHHXInHC8QFnoECBoQAQ&usg=AOvVaw1Y5bNvX9xsQjY0ihbxKPfJ

COUNTRIES_DICT = {
    "CA": {
        "nl_code": "5001",
        "iso_code": "CA",
        "name": "Canada",
    },
    "FR": {
        "nl_code": "5002",
        "iso_code": "FR",
        "name": "Frankrijk",
    },
    ....
}

Script:

from PyPDF2 import PdfReader

countries = {}
empty_data = {"nl_code": "", "iso_code": "", "name": ""}
reader = PdfReader("Tabel 34 Landen (gesorteerd op code).pdf")

for page in reader.pages:
    current_data = empty_data.copy()
    for line in page.extract_text().splitlines():
        line = line.strip()

        if len(line) == 4 and line.isdigit():
            current_data["nl_code"] = line
            continue

        if current_data["nl_code"] and len(line) == 2:
            current_data["iso_code"] = line
            continue

        if current_data["nl_code"] and current_data["iso_code"]:
            iso_code = current_data["iso_code"]
            current_data["name"] = line
            countries[iso_code] = current_data
            current_data = empty_data.copy()
            continue

print(countries)
print(len(countries))