Create a function to identify kernels

[Kelvinrr]

It would be useful to have a function like toKernelJson for formatKernels that gets a list of kernel paths and uses the Config obj to sort them into a Kernels JSON object.

For example,

kernels = formatKernels(["k1.fk". "k2.ti", "k3.bsp"])
print(kernels)
>>> {
           "fk" : ["k1.fk"],
            "spk" : ["k2.bsp"],
             "ik" : ["k2.ti"]
     }