Switch OneHotEncoder to LabelEncoder

[aPovidlo]

Change default categories encoder as LabelEncoder in preprocessing

[valer1435]

Только в мастер это не стоит лить, лучше в отдельную ветку

[aPovidlo]

Стоит проверить, работает или нет. Если действительно работает, то хорошо.

Там тесты падали. Как я думал, ветку будут использовать отдельно в экспериментах прежде чем лить в мастер

[pep8speaks]

Hello @aPovidlo! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file cases/credit_scoring/le_exp.py:

Line 5:1: F401 'sklearn.preprocessing.LabelEncoder' imported but unused

• In the file fedot/core/constants.py:

Line 13:1: E302 expected 2 blank lines, found 1 Line 16:1: E305 expected 2 blank lines after class or function definition, found 1

• In the file test/unit/data/test_data_merge_text.py:

Line 6:1: F401 'fedot.core.data.merge.data_merger.DataMerger' imported but unused

Comment last updated at 2023-11-21 13:51:32 UTC

[nicl-nno]

В целом те тесты где проверяется размерность выхода можно просто отключить в этой ветке.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (70fc033) 79.49% compared to head (ffbf306) 79.39%. Report is 2 commits behind head on master.

:exclamation: Current head ffbf306 differs from pull request most recent head ee20efd. Consider uploading reports for the commit ee20efd to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1196 +/- ## ========================================== - Coverage 79.49% 79.39% -0.10% ========================================== Files 145 145 Lines 10022 10022 ========================================== - Hits 7967 7957 -10 - Misses 2055 2065 +10 ```

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[aPovidlo]

Migrate to #1004 Preprocessor acceleration