Add obfuscated boolean field in RBinInfo

[radare]

This can be easily determined with some checks in RBin, maybe to autodetect if the bin is packed, or the class info obfuscated, etc obviously not 100% reliable, but handy for some use cases

[Maijin]

Meh I really dislike those tools that display this because it's most of time not accurate and if it's written: Packed then what you still need to understand what it means -> So useless.

[Maijin]

There is yara and p=e and iS entropy for that

[Maijin]

One could do a small script that recaps all of the commands that can help determining the obfuscation level but this should go in r2r since it would imply usage of yara.