new: Support devices on the Enviro pHAT about periph HOT 8 CLOSED

PR #304 implemented ADS1015, so you can check it.

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I found it on Adafruit but it's out of stock. Pimoroni has even more reasonable shipping rates to Canada than Adafruit so I may order from there.

For now add it to experimental/ and once you have a smoke test and good unit test coverage, we can move it back into the official tree.

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That sounds good. I'm in Europe (Sweden) making it fairly easy to get here. Maybe also ordering a a Zero W to put it on is a good idea?

I'll add the device drivers one by one to experimental. Do you want the smoke tests to be per device or for the whole HAT?

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I prefer per device smoketest, as it's more reusable.

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Got it.

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We may scratch BMP280 of the list since 252733a

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I'll leave it checked in the list as that device is still on the Enviro pHAT.

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I have a discrete TCS3472 and am willing to contribute device driver.

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