Move Throughput into `sc-sysinfo` (#12368)

* move Throughput to sc-sysinfo

* replace u64

* fix in tests

* change Throughput

* refactored Throughput

* fixes

* moved tests & fixes

* custom serializer

* note

* fix serializer

* forgot to remove

* deserialize

* functioning deserialization :)

* try to make clipply happy

* Serialize as function

* test HwBench

* rename

* fix serialization

* deserialize as function

* unused import

* move serialize/deserialize

* don't serialize none

* remove nonsense

* remove nonsense comment :P

* fixes

* remove all the todos

* return enum

* fixes

* fix nit

* improve docs & readability

* Update client/sysinfo/src/sysinfo.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* fix all the nits

* rename

* fix

* Update client/sysinfo/src/sysinfo.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* remove unit from serialization

* Update utils/frame/benchmarking-cli/src/machine/hardware.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>