Decompression of iOS kernelcache / Android Kernel images.

[brinlyau]

What is the feature you'd like to have? Native support for decompressing the kernel binaries of major mobile platforms so they can load natively without external tooling/processing. IDA natively does this for kernelcaches, and it's a very handy usability fix. (zImage and iOS kernelcache are the main ones I care about).

Probably dependant on #133

Are any alternative solutions acceptable? I mean, you can use open source img4 tooling and gzip command line tooling, but it would be nice if Binja could handle this natively.