Add GraphQL

[romain-dartigues]

Reference from: https://graphql.org/_next/static/media/logo.ad338028.svg

Thank you for your contribution! Before sending this Pull Request, please confirm the following:

• You have read the contributing guidelines
• The icon's size is under 1,024 Bytes
• The layout of the SVG looks like this including newlines

<svg xmlns="http://www.w3.org/2000/svg"
aria-label="..." role="img"
viewBox="0 0 512 512"><path
d="m0 0H512V512H0"
fill="#fff"/> ... </svg>

If you have done the above, please send the Pull Request.

Notes:
The logo might seems smaller than usual but I tried to respect the directive "Keep a clear space of at least half the height of the hexagraph along on all sides"¹.

If accepted, this should close #828.

Footnotes

1. https://graphql.org/brand/#spacing ↩

[Eiim]

This one should have the SVG code compacted down to fewer lines as well.

[romain-dartigues]

Hi @Eiim,
Sorry but I don't understand, would you be so kind as to explain it to me a bit more?
I used new lines instead of spaces in order to try to make diffs easiers, if this is no longer desired, I could stop doing that, but the resulting file size will be the same :^)