Add DropRowsTransformer

[angela97lin]

Closes #2682

[codecov]

Codecov Report

Merging #2692 (a558902) into main (7eccf6e) will increase coverage by 0.1%.
The diff coverage is 97.1%.

@@           Coverage Diff           @@
##            main   #2692     +/-   ##
=======================================
+ Coverage   99.9%   99.9%   +0.1%     
=======================================
  Files        298     300      +2     
  Lines      27320   27442    +122     
=======================================
+ Hits       27276   27398    +122     
  Misses        44      44             

Impacted Files	Coverage Δ
evalml/pipelines/components/__init__.py	100.0% <ø> (ø)
...alml/pipelines/components/transformers/__init__.py	100.0% <ø> (ø)
evalml/tests/component_tests/test_utils.py	95.3% <33.4%> (ø)
.../components/transformers/preprocessing/__init__.py	100.0% <100.0%> (ø)
...ransformers/preprocessing/drop_rows_transformer.py	100.0% <100.0%> (ø)
evalml/tests/component_tests/test_components.py	100.0% <100.0%> (ø)
...ests/component_tests/test_drop_rows_transformer.py	100.0% <100.0%> (ø)

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[eccabay]

Looks good to me, very clean!

[bchen1116]

Looks great! Left a few comments on potential changes that would be nice, but nothing blocking!

[angela97lin]

Typical codecov 😭