Refactor error handling when hardware name is duplicated

[bmagyar]

Is your feature request related to a problem? Please describe.

There is a solution to duplicated hardware names #672 and eve though it is a working one, it is not the ideal solution.

Describe the solution you'd like

Refactor the code to take this comment into account.

Add some tests.

[destogl]

The point is that we should do this check much earlier and not when we already initialize hardware with the duplicated name.

• [ ] Move lines 103 - 108 in ResourceManager.cpp to a new method called check_for_duplicates.
• [ ] Use this method at the beginning of methods:
  • void initialize_actuator(const HardwareInfo & hardware_info)
  • void initialize_sensor(const HardwareInfo & hardware_info)
  • void initialize_system(const HardwareInfo & hardware_info)
• [ ] rename those three methods to load_and_initialize_*