[UIMA-6291] Improve uimaFIT benchmarking module

- Factor templates out of the individual tests into a setup() method in SelectBenchmark
- Provide a mapping method from the timer unit to milliseconds instead of using a time unit string - this allows converting the time to a convenient unit for showing timings to the user while utilizing the full time resolution for accumulation/calculation
- Allow configuring the random document length and annotation length range
- Make the random document larger (100 -> 1000)
- Change report formats to be hopefully more informative
- Formatting
8 files changed