add mode for outputting pure JSON
F-Droid is working on using rust_cid_npm to do offline CID generation. fdroid/fdroidserver!1154 (comment 1033037369)
One thing that would make it a lot easier to use it programmatically is if it had a mode where it output pure JSON. I could see adding a -v / --verbose flag to enable all the verbose text that is currently printed. Another backwards compatible approach would be to add a --json flag that only outputs JSON.