[BUILD] Add gitpod to build the firmware (#1515)

Allow to build OMG from a web browser and download the binary

docs/.vuepress/config.js

@@ -69,6 +69,7 @@ module.exports = {
             'upload/web-install',
             'upload/binaries',
             'upload/builds',
+            'upload/gitpod',
             'upload/portal',
             'upload/advanced-configuration',
             'upload/troubleshoot'