Small Polish model for Vosk

WER

%WER 18.36 [ 10713 / 58340, 1355 ins, 1588 del, 7770 sub ] exp/chain/tdnn/decode_test_cv_look_fast/wer_10_0.0
%WER 16.88 [ 2876 / 17034, 519 ins, 247 del, 2110 sub ] exp/chain/tdnn/decode_test_mls_look_fast/wer_8_0.0
%WER 11.55 [ 4153 / 35963, 979 ins, 1079 del, 2095 sub ] exp/chain/tdnn/decode_test_vox_look_fast/wer_9_0.0
