Normalizer multicolumn example

[sfilipi]

Adding a sample for the bin normalizer multicolumn extenion.

[sfilipi]

@shmoradims, @Ivanidzo4ka @natke how do you feel about leaving this samples simple?
The other overload has a ton more information, but maybe there is no need to duplicate all of that?

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@082ab77). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #3435   +/-   ##
=========================================
  Coverage          ?   72.72%           
=========================================
  Files             ?      807           
  Lines             ?   145206           
  Branches          ?    16230           
=========================================
  Hits              ?   105608           
  Misses            ?    35179           
  Partials          ?     4419

Flag	Coverage Δ
#Debug	72.72% <ø> (?)
#production	68.27% <ø> (?)
#test	88.98% <ø> (?)

Impacted Files	Coverage Δ
src/Microsoft.ML.Transforms/NormalizerCatalog.cs	84.78% <ø> (ø)

[shmoradims]

[shmoradims]

@shmoradims, @Ivanidzo4ka @natke how do you feel about leaving this samples simple?
The other overload has a ton more information, but maybe there is no need to duplicate all of that?

Let's not spend time creating new samples. Our sample coverage is close to 100%. We just have to make sure the existing samples from people on vacation are checked in properly.