chore(gatsby-source-medusa): Cleanup plugin setup (#4419)

* chore(gatsby-source-medusa): Cleanup plugin setup

* fix process-node

* Create gentle-cups-crash.md

packages/gatsby-source-medusa/.gitignore

@@ -1,13 +1,6 @@
+/dist
 node_modules
-
-.DS_Store
-
-utils
-
-
-*.js
-*.js.map
-*.d.ts
-!/types/*.d.ts
-
-!jest.config.js
+.DS_store
+.env*
+.env
+*.sql