You are not going to be happy with a pair of 45" French doors, even if you could make them, or spend a metric shit-ton of cash for custom ones. That is simply too big of a hinged door to perform well. Reframe the opening to reduce it to a reasonable size, a max. of 72" then look at your options. The other option would be to double up on traditional sliding door track, and fill the opening with three 32" sliding doors. This will take a bit of creativity when it comes to hardware, and installation, but it will be the easiest and least expensive option.