keyboard cover for iPad Mini 2019 (gen 5)
Clearly, no one is making the cover you want in June 2019. You might need to get a cover and a keyboard if you don't want to wait.

Here are the keyboards I'd get if you need that first or can't wait:

Apple's actual keyboard nails your requirements for exact keyboard layout, bluetooth support, lightning charging, major brand known for quality keyboards (setting aside people’s love hate MacBook Butterfly keyboard issues)


https://www.apple.com/be-fr/shop/product/MLA22F/A/magic-keyboard-fran%C3%A7ais


Apple’s bluetooth magic keyboard comes with and without numeric keyboards and also in space grey if you want to spend a bit more. They are not the same size as the mini (feature and/or bug) and you’ll get the best support since Apple made both software, firmware and hardware. If that doesn’t work, Apple has no excuse they didn’t expect you to use these together.


https://www.logitech.com/en-us/product/ultrathin-keyboard-folio-for-ipad-mini


Logitech would by my next iPad mini specific recommendation. Solid, great warranty, sized right, support for iOS explicitly and you might even score a European model key layout.

I haven’t seen this yet in person, but am tempted to buy it sight-unseen knowing it’s featured at Apple Retail and from a trusted vendor.


Logitech Keys-to-Go Ultra Slim Keyboard with iPhone Stand