feat(starters): add gatsby-starter-i18n-blog (#9545)
feat(starters): add gatsby-starter-i18n-blog (#9545)

This is the same official blog-starter-kit but with with i18n support. It doesn't use any external libraries like rect-intl, instead it relies on getting translations for things like the bio or site title from .md files. The philosophy is that the source-content (the CMS or in this case .md files) is the one that provides translations.

The example site is here:
https://jackbravo.github.io/gatsby-starter-i18n-blog/
And the repo here: https://github.com/jackbravo/gatsby-starter-i18n-blog
gatsbyjs/gatsby,gatsbyjs/gatsby,0x80/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,mingaldrichgan/gatsby,0x80/gatsby,0x80/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby