feat: Updates to include next build plugin

Author: maxcell

.gitignore

@@ -28,3 +28,6 @@ yarn-error.log*
 .env.development.local
 .env.test.local
 .env.production.local
+
+# Local Netlify folder
+.netlify

netlify.toml

@@ -1,3 +1,6 @@
 [build]
   command = "npm run build"
-  publish = "out"
+  publish = ".next"
+
+[[plugins]]
+  package = "@netlify/plugin-nextjs"