Add Tschuprow's T

[stancld]

🚀 Feature

Add Tshuprow's T -- correlation coefficient for categorical variables.

In statistics, Tschuprow's T is a measure of association between two nominal variables, giving a value between 0 and 1 (inclusive). It is closely related to Cramér's V, coinciding with it for square contingency tables. It was published by Alexander Tschuprow (alternative spelling: Chuprov) in 1939. (Source: https://en.wikipedia.org/wiki/Tschuprow%27s_T)

Motivation

Add correlation metrics specific to categorical variables

Additional context

Nice blog post on this: https://towardsdatascience.com/the-search-for-categorical-correlation-a1cf7f1888c9

See #1298