feat: support gatsby v5 (#195)

Co-authored-by: Cody Olsen <81981+stipsan@users.noreply.github.com>

Author: stipsan

.gitignore

@@ -5,3 +5,7 @@ lib/
 lib-es5/
 yarn.lock
 coverage
+.cache
+public
+.vercel
+.vscode

examples/blog/.npmrc

@@ -0,0 +1 @@
+legacy-peer-deps=true

examples/blog/gatsby-browser.js

@@ -0,0 +1 @@
+import './src/styles/global.css'

examples/blog/gatsby-config.js

@@ -0,0 +1,17 @@
+/**
+ * @type {import('gatsby').GatsbyConfig}
+ */
+module.exports = {
+  plugins: [
+    'gatsby-plugin-postcss',
+    {
+      resolve: 'gatsby-source-sanity',
+      options: {
+        // https://pv8y60vp.api.sanity.io/v1/graphql/production/default
+        projectId: 'pv8y60vp',
+        dataset: 'production',
+      },
+    },
+    `gatsby-plugin-image`,
+  ],
+}