Replace Ensemble dependency and Add overrepresentation and enrichment tests for gene sets in patterns

[jmitchell81]

• Replace usage of Ensemble to query gene sets from the internet with msigdbr
• Update getPatternHallmarks to getPatternGeneSets
• • Allow for overrepresentation test for gene sets in PatternMarkers results
• • Add capability for gene set enrichment test using gene amplitudes in patterns
• • Add gene sets as a list as inputs to the function rather than exclusively using HALLMARK gene set