Other changes:
Tweaked addNewParameter() in order for the IDs to be arbitrary (insertion
of already existing ID test incoming) according to suggestion by @kongr45gpen

Additional changes:
Fixed tests for parameter setting to accommodate the new way of parameter storage

Cause was an off-by-1 error in construction of the Parameter objects.
Minor changes to documentation

Also update some of the tests

Looks like a test is breaking all of a sudden

Remove unnecessary #define CATCH_CONFIG_MAIN to comply with the Catch2 tutorial, credits to @thodkatz for the catch (no pun intended :P)

Update the tests and documentation to reflect the fact that the service functions are now properly returning the ST[1, 4] failed start of execution notification when needed

Remove unnecessary #define CATCH_CONFIG_MAIN from parameter service test. Also fix a random typo @ MemoryManagementService's javadoc.

setup, more info on numOfValidIds() source

Replace the if's used for message type checking with proper error-handler-controlled assertions. One test needs updating to use the error handler's output.

Remove unnecessary #define CATCH_CONFIG_MAIN from parameter service test. Also fix a random typo @ MemoryManagementService's javadoc.

setup, more info on numOfValidIds() source

Update ParameterService source and test to use resetRead() instead of the hackier msg.readPosition = 0 and fix some formatting