Boot diags with dev iBoot built from sources

This is the easy way if you know how to build iBoot from sources. Otherwise just follow Nyan Satan's blog post (https://nyansatan.github.io/boot-diags/). The tool I use I just a mix of img3maker and irecovery, which open source on my GH repo (matteyeux/ibooter) BTW this demo is useless https://twitter.com/matteyeux/status/1051524420748107776 ~matteyeux