Add __repr__/ __str__ to statistics for a overview of a column

[Gerhardsa0]

Is your feature request related to a problem? Please describe

If we want to get a clear overview of a numerical column with min, max, mean, std... we need to make multiple function class and the Code will look something like this.

print(sup_table.target_values.statistics.mean())
print(sup_table.target_values.statistics.mode())
print(sup_table.target_values.statistics.median())
print(sup_table.target_values.statistics.standard_deviation())
print(sup_table.target_values.statistics.variance())
print(sup_table.target_values.statistics.min())
print(sup_table.target_values.statistics.max())
print(sup_table.target_values.statistics.__str__())

generated output:

180921.19589041095
140000
163000.0
79442.50288288662
6311111264.297448
34900
755000

Desired solution

Add __repr__ and/or __str__ to stastitics so the output is kind of like in the Pandas describe() function.

y = house_data.SalePrice
y.describe()

generated output:

count      1460.000000
mean     180921.195890
std       79442.502883
min       34900.000000
25%      129975.000000
50%      163000.000000
75%      214000.000000
max      755000.000000

Additional context (optional)

Related issue: #316

[SmiteDeluxe]

But I think we not only want statistics but also just the contents of a Column. Similar for Table, Row and Schema.