Feature Request: Icon boilerplate with design patterns

Hi guys!

I see several requests for new icons here, and some even with proposals already defined.
And following this thought, I think they could provide an SVG guide or grid with specs [grid, pixel-perfects] to draw an icon in the FeatherIcons standards.

Perhaps a Wiki page with this information would help a lot in the quality and agility in inserting possible new icons.

No file, test, or entry point is named. Start by reviewing the issue's proposed SVG guide or grid and the FeatherIcons standards it should document; done means a concrete, agreed guide or wiki page that explains the grid and pixel-perfect requirements for creating icons.

Written by the indexing model from the issue text.