Add Reliability diagram and bar charts#812

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awig wants to merge 8 commits intoSolarArbiter:masterfrom

awig:reliability_diagram

Commits on May 12, 2020

Added metric resample and align tests for ProbabilisticForecast and ProbabilisticForecastConstantValue
awig
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Commits on May 27, 2020

Merge remote-tracking branch 'SolarArbiter/master'
awig
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Commits on Jun 17, 2020

Merging with SA/master
awig
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Commits on Jan 26, 2023

laying grundwork for adding reliability diagram, also added a util function to check if Report has probablistic forecasts
awig
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