docs: Create gitlab-continuous-integration.md (#23367)
docs: Create gitlab-continuous-integration.md (#23367)

* Create gitlab-continuous-integration.md

A small recipe with a minimal example on how to setup gitlab ci/cd for a gatsby project

* Update docs/docs/recipes/gitlab-continuous-integration.md

Co-Authored-By: Obinna Ekwuno  <25b3cf641f4285fe22bc76bbc2c5bf06c5083ede@gmail.com>

* Update docs/docs/recipes/gitlab-continuous-integration.md

Co-Authored-By: Obinna Ekwuno  <25b3cf641f4285fe22bc76bbc2c5bf06c5083ede@gmail.com>

* docs: include steps to create a gatsby site

* Update to use relative links

Co-Authored-By: Obinna Ekwuno  <25b3cf641f4285fe22bc76bbc2c5bf06c5083ede@gmail.com>

* build: add params

Co-Authored-By: Obinna Ekwuno  <25b3cf641f4285fe22bc76bbc2c5bf06c5083ede@gmail.com>

* chore: format

* Update intro to Recipe

* chore: format

Co-authored-by: Obinna Ekwuno  <25b3cf641f4285fe22bc76bbc2c5bf06c5083ede@gmail.com>
Co-authored-by: gatsbybot <313a651c59fdaade90d152972001707d94b0975c@gmail.com>
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby