Featured testplan_rank sample by VUnit

• see the readme.txt from original testplan_rank sample

How to Run

1. add Riviera-PRO/bin folder to PATH environmental variable

2. use python to execute run.py script

3. execute in System Command Line

   vsim -do "do src/runme.do"
   

The HTML Coverage/Metric Quality reports results.html and rank.html will be generated within ./output directory.