[GS] City Sprawl Improvement

[Sergean Toad]

A city sprawl improvement(not district!) that adds housing, food and production and others if adjacent to a appropriate district and is unlocked in modern/atomic era. I've seen a 'downtown' district mod but it's clunky and it doesn't work with latest update of Civ6. I think that a generalized improvement is easier to implement compared to a uniquely designed district, right?

Improvement conditions:
Must be adjacent to City Center OR adjacent to another city sprawl improvement. (like Endless Legend's City building)

+2 housing +2 food +3 Production maybe??