Create basic test library
Use VUnit "log" and "check" library all over the testcases:
- Add includes for "log" and "check" library. Resolve all things that must be changed in run.py script.
- Change all TCs to use VUnit log function.
- Remove old log function in CANTestlib and all related structs. Think about severities.
- Use Check library to replace explicit "if" comparisons.