Add explanation text to the `shipthis apple login` command and wizard equivalent

[madebydavid]

Background

Users have mentioned that entering their Apple credentials into the command line tool is slightly uncomfortable considering that they have only just installed shipthis and may not fully trust it.

Possible solutions

• Add text and explanation to the shipthis apple login command
• Also add this during the iOS wizard
• A help page about this?
• Research into how expo handle this

[lrsbt]

If you would include a link to the actual login code running on shipthis apple login and show a message explaining you use the expo login functions under the hood, I think it would make feel more comfortable.

[madebydavid]

Thanks @lrsbt - thats a good point - explanation text by itself might sound more suspicious - linking to the code is the right thing to do here.

[madebydavid]

I think we can tidy up the code a bit here too - there is a shim we need to use for expo because it is a CommonJS bundle and ShipThis is "type": "module"

If we can, clean up or remove the shim, and get all the relevant auth code into the same login command and then add a message which links to the source then that would be cool

[madebydavid]

Suggested markdown message:

# Signing in to Apple

ShipThis sends your Apple ID and password **directly to Apple's authentication service**,
using the open-source `@expo/apple-utils` library.

- Your password is **never stored** and is **never sent to ShipThis servers**.
- Only the resulting Apple **session cookies** are saved, locally, to your auth file.
- Your password is used once, for this sign-in, and then discarded.

**Read the exact code that handles your password: [<%= sourceURL %>](<%= sourceURL %>)**