Performance test as part of build

[Even Solbraa]

Is your feature request related to a problem? Please describe.
Need to make sure updates are not reducing simulation performance. See issue:
#706

Describe the solution you'd like
Use https://github.com/openjdk/jmh

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[Åsmund Våge Fannemel]

See https://github.com/equinor/neqsim-benchmark

[Even Solbraa]

See https://github.com/equinor/neqsim-benchmark

This seems like a very good solution. I had problems setting up, but now it work fine. The challenge is how we can use it to see improvements in performance and to use it for finding bottlenecks.

I think using this in combination with the profiler could be good: https://github.com/equinor/neqsim/wiki/Profiling

[Åsmund Våge Fannemel]

https://gist.github.com/markrmiller/a04f5c734fad879f688123bc312c21af#file-gistfile1-md

[Even Solbraa]

Benchmark project created.