golang/GAE: upload and email a file via a webpage

Must know golang and Google App Engine (GAE) for this project! Must have a Gmail account and an active google cloud development account ( [login to view URL] ) to use while developing/testing for this project. Using only golang, code a webpage that accepts the upload of one (1) file and emails to that file to the destination email specified. Multiple files (2 or more) do not need to be supported. Please see the two attached HTML files for the user interface that needs to be implemented. The user interface can be very basic and simple. No database (no CloudSQL) and no file storage (no GCS) may be used. Email must be sent via a Google gmail. No other email server may be used. Deliverables for this project include all source code and step-by-step documentation which I can use to deploy your solution using my own personal gmail account and google cloud development account. Only golang may be used to code this program. Project is *not* urgent and can be worked on at your convenience. Excellent employer. Excellent past reviews on Freelancer dot com (see / u / vw1595282vw dot html ). Please describe your prior golang and GAE experience in your bid.