Indistinct vendor variables? [Feature request]

[sandervanhooft]

Detailed description and context

The package_vendor variable is currently used for both the Packagist vendor name and the PSR vendor name.

I.e. I am using sander-van-hooft as my Packagist vendor name, and SanderVanHooft as my PSR vendor name, sandervanhooft as my github username.

(Yes, that's inconvenient, but it's too late to change now. )

The prefill.php and the markdown document do not make a distinction between these variables, so I end up editing them manually.

How can it benefit other users?

Possible implementation

1. Use separate variables in the markdown files for the vendor: github_username, packagist_vendor, psr_vendor.
2. Find a way to conveniently integrate this into the prefill.php file.