Incorporate country-coder for locale-specific logic

[bdon]

https://github.com/rapideditor/country-coder provides a complete, fast and purely geometric dataset we can use in-memory for java to determine locale for cartographic logic.

[1ec5]

Some use cases for this functionality, off the top of my head:

• Bank and ATM icons based on the local currency symbol
• Culturally sensitive icons for Buddhist temples and post offices in Japan that would be poorly understood elsewhere (to say the least)
• Regionally appropriate glosses of “local” names, independently of OSM’s name=* tags (which sometimes reflect some compromises)
• Romanizations of non-Latin names according to national standards
• Prioritizing each country’s major road network at low zoom levels independently of highway=trunk tagging, which can be a mess
• One-way icons offset from the road, as in conventional print maps, but on the correct driving side
• Route shields for some route networks like the Asian Highway that vary dramatically from country to country
• The UK really, really likes their roads color-coded just so based on highway classifications

[bdon]

Added in #328