chore(showcase): Add Nathaniel Ryan Mathew portfolio

[nathanielmathew]

Description

Added Personal Portfolio to site showcase

[vladar]

Mind fixing conflicts?

[jamesgeorge007]

Please resolve the conflicts.

[nathanielmathew]

will this do?

[LekoArts]

Thanks 👍

[gatsbot]

Holy buckets, @nathanielmathew — we just merged your PR to Gatsby! 💪💜

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