Clean up of example test projects of amc and amc2c

[marcoaccame]

This PR just cleans up the example projects for the boards amc and amc2c and does not interfere with their projects used in the robot.

The above projects were required for testing and for the progress of the application but since the application is ready and effective these projects were left behind. I have updated them now because I will need to do tests with them again, with the main focus of running the UDP stack on the CM4 core.

I have also added some macros (now disabled) in the code of the eLoader that allow to:

• keep the execution of the CM7 in a forever blinking loop inside ethe eLoader without any jump to eUpdater or eApplication;
• enable execution of the CM4 core (that is normally enabled by the eApplication).

The above is useful for running sample test projects on the amc2c without the need of the full eLoader - eUpdater - eApplication framework in the amc.

Mergeability

This PR can be safely merged because it touches only test projects not used on the robot.