[Phase 1] Refactor 0x06j-Testing-Resiliency-Against-Reverse-Engineeri…

…ng.md (#2321)

* Add overview theory section

* Extract more theory into overview

* update reference, remove MASVS IDs

* add swiftshield to tools

* second round of refactor

* Apply suggestions from code review

Co-authored-by: Axel Iota <aiota@nowsecure.com>
Co-authored-by: Carlos Holguera <perezholguera@gmail.com>
Co-authored-by: Jeroen Beckers <me.githbub@dauntless.be>