Deprecate add_weighted_quantiles

[MaxGhenis]

It doesn't work with MicroDataFrames (weights by the weight squared if the weight column is in the DataFrame):

microdf/microdf/weighted.py

Line 155 in 995a0c7

df[col_pctile] = 100 * df[w].cumsum() / df[w].sum()

It also sorts the data which can create issues, and it creates tons of columns when usually a user just wants one at a time. These could be overcome but I think it'd be better to invest in MicroDataFrame.rank and MicroSeries.rank (#187).