To avoid recompilation and adding cases each time a langage is added,
remove dependency on the "Supported_Language" enumerated type

There is little consistency between the Language property in Ocarina and
other parts such as the flags in the orchestrator. This is a workaround,
that could also be done in a template file, for the following issues;
- Ocarina refers to Language_ADA_95 while TASTE supports Ada 2012
- The casing in the orchestrator is mixing uppercase (--subSIMULINK)
and mixed case (--subMicroPython, --subQGenC).