Benchmarking: Update benchmarks/performance

[vickumar1981]

This is very open-ended, but at a start, deciding upon a way to run benchmark tests would be a great improvement, and would allow code changes to be tested from the perspective of performance.

** To do **

• Evaluate bench marking tools available
• Decide upon bench marking approach
• Implement benchmarks in test suite.

[vickumar1981]

Per PR: #61,

we'll be using the sbt-jmh plugin (https://github.com/ktoso/sbt-jmh) to run behcnmarks.

Currently, benchmarks can be run from the project root:

./sbt bench/jmh:run -i 1 -wi 1 -f1 -t1

TO DO:

• Bump sbt-jmh plugin version to 0.4.0, Doesn't work. Stick with 0.3.7
• Document usage of benchmarks
• Decide whether to benchmark against another library like apache-commons-text (https://commons.apache.org/proper/commons-text/)
• Decide whether to add more benchmarks for other classes besides ArrayDistance (maybe StringDistance, for example)

[vickumar1981]

Tested version 0.4.0 of the sbt-jmh plugin, and it doesn't look like it's working. Will stick with 0.3.7 for now.

[vickumar1981]

Closing this issue and creating some more granular ones.