DoD

[ ] Split command line parsing of --cpu-bind string into its own class. allow setting thread affinity based on this result. This is orthogonal to #74.
[ ] Refactor function selection/function summary to support multiple architecture (ISA)
[ ] Split config parsing and code based on parsed config settings
[ ] find a substitute for family/model for Arm
[ ] Find a way to extract clockrate/timestamp on ARMv8 (timestamp is important for ipc-estimate metric and performance report)
[ ] Refactor default/neon payload from prototype PR: https://github.com/tud-zih-energy/FIRESTARTER/compare/master...aarch64_support
[ ] Abstract memory fence between X86 and ARMv8, also select correct memory fence for ARMv8

Open Questions

Should the function IDs start at 1 for each ISA (x86_64, armv8 etc.) or should they be in sequence (available function report will show also x86_64 functions on ARM?)