Add new icons

[samanpwbb]

@natslaughter for review

add car-rental, car-repair, casino, charging-station, furniture, globe, hardware, jewelry, optician, paint, shoe, watch, watermill, windmill

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closes #423, closes #422, closes #421, closes #420, closes #419, closes #418, closes #417, closes #410, closes #409, closes #408, closes #404, closes #376

[natslaughter]

@samanpwbb these are looking superb.
I'll post feedback by icon as I go through geometry reviews and placing the icons on a map.

First up, watermill

The 15 pixel icon looks great, which will be the only size we see on the Mapbox core-styles. But the 11-pixel icon does seem to be a bit blurry around the wheel of the mill:

It looks like if the wheel were to shift slightly to align with the grid, there would be a little more negative space.

[natslaughter]

car-repair 15 pixel looks good:

11 pixel seems to be a little tight, and although the image below on the right isn't pixel aligned and is a rough sketch, I think it begins to show a possibility for more space between the car and wrench.

[natslaughter]

charging-station 15-pixel looks good

11-pixel might be able to house a little more negative space for the lightning bolt, as seen below in the two sketches to the right (left is the original icon). As it is currently, it's a bit difficult to read.

[natslaughter]

optician 15-pixel looks good

I guess the 11-pixel could be better pixel aligned, unless you think the blurry grey-ness causes a desired effect.

[natslaughter]

I'm finding the boot to be a bit 'clunky' and I wonder if decreasing the opening width would help? Also, did you try using a shoe symbol instead of a boot?

[samanpwbb]

@natslaughter thanks for the review 🙏 will have updates for ya here tomorrow

[samanpwbb]

Also, did you try using a shoe symbol instead of a boot?

Yeah, I went with a boot because i had a hard time getting lace detail to look good and fit in with the rest of the icon set. Boots have stronger silhouettes so they don't need to rely on negative space as much. On the other hand, a shoe might be a better, more general symbol. You think I should give shoe another shot @natslaughter?

[samanpwbb]

@natslaughter updated all the icons based on feedback. Over to you again.

[natslaughter]

@samanpwbb these look tremendous. Thank you for your contribution. Please merge and close at your leisure. ❤️