add exp praat xgb for gh action

data/ravdess/exp_praat_xgb.ini

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+[EXP]
+root = ./results
+name = exp_ravdess_praat_xbg
+runs = 1
+epochs = 1
+save = True
+[DATA]
+databases = ['dev', 'test']
+dev = ./data/ravdess/ravdess_dev.csv
+dev.type = csv
+dev.absolute_path = False
+dev.split_strategy = train
+test = ./data/ravdess/ravdess_test.csv
+test.type = csv
+test.absolute_path = False
+test.split_strategy = test
+target = emotion
+labels = ['angry', 'happy', 'neutral', 'sad']
+[FEATS]
+type = ['praat']
+[MODEL]
+type = xgb