why ipsw isn't able to locate the symbol for the NSObject class

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          TL;DR: we need to find out why `ipsw` isn't able to locate the symbol for the NSObject class. If that's a blocker for this PR, it's up to you. The generated code will compile just fine with the `@class NSObject;` statements.

Originally posted by @t0rr3sp3dr0 in #443 (comment)

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@t0rr3sp3dr0 I just made this issue so we don't forget to check if the FIX to #445 takes care of this as well as we don't need to waste time parsing libObjc which I would expect to be rather large etc

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Just to NOTE I ran a bunch of experiments and adding libobjc doesn't add a noticeable delay to header generation

So we don't need to remove for perf, but I'd still like to make sure #445 doesn't affect other things besides proto class; like class super class etc