hwl: Adds helpers for asynchronous stateful communication

Fixes several bugs in the hwl module, adds helpers for stateful communication via asynchronous bus variables.

New Features

• [hwl]:
  • variables: Added AutoState to track the value of a variable via asynchronous communication / stateful
  • variables: Added AutoTransfer implementation for automatic retries / transfers on asynchronous variables
  • testing: Added FakeBusDriver to fake a BusDriver in unit tests
• [core]: CycleTimer: Adds setCycles() method to reset cycles after construction

Bug Fixes

• [hwl]:
  • components/esd: Fixed return value of delegateTransfer() of the esd EtherCAT CAN gateway
  • components/esd: Fixed errors related to wrk counter checking on overflow / transaction number overflow
  • components/esd: Fixed behavior of ESDCANTxQueue: Don't expect device to ack TX counter after one cycle
  • Fixes scope of processDevice() method / testing framework
  • Use std::mutex for QNX versions < 7.1: shared_timed_mutex is very slow on write operations

Breaking Changes

• [hwl]: New testing API for BusDeviceTest/BusGatewayTest