Add basic benchmarks

[jeremykubica]

Closes #16

Creates benchmarks for generating the features data and running the learning loop with 4 different settings.

[github-actions]

Before [133e4bd]	After [0fd988a]	Ratio	Benchmark (Parameter)
2.63±0.03s	2.67±0.05s	1.02	benchmarks.time_learn_loop('RandomForest', 'RandomSampling')
2.66±0.01s	2.72±0.03s	1.02	benchmarks.time_learn_loop('RandomForest', 'UncSampling')
134±1ms	133±0.6ms	1	benchmarks.time_feature_creation
168±0.5ms	168±2ms	1	benchmarks.time_learn_loop('KNN', 'RandomSampling')
172±3ms	171±1ms	0.99	benchmarks.time_learn_loop('KNN', 'UncSampling')

Click here to view all benchmarks.