Backup google contacts via the People api
A simple project to back up google contacts into .vcf (vCard) format This will download all your contacts and write them to a .vcf file.
It is a bit hacky and unpolished as well as unfinished. Use at your own risk. Especially in production.
For this to work you need a OAuth client ID from google (credentials.json) from a
Google cloud project
It will ask you to login on the first run. Open the link, login, copy code and paste it into the console.