chore(starters): add gatsby-sanity-developer-portfolio (#22629)
chore(starters): add gatsby-sanity-developer-portfolio (#22629)

* chore(starters): add gatsby-sanity-developer-portfolio

* chore: format

Co-authored-by: gatsbybot <313a651c59fdaade90d152972001707d94b0975c@gmail.com>
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby