input: Write a python function to read a CSV file and split it into features and labels.
  assert isinstance(split_features_labels('clothing.csv'), tuple)
  assert len(split_features_labels('clothing.csv')) == 2
  assert isinstance(split_features_labels('clothing.csv')[0], pd.DataFrame)
  assert isinstance(split_features_labels('clothing.csv')[1], pd.Series)
output: import pandas as pd
  
  def split_features_labels(file_path):
      df = pd.read_csv(file_path)
      features = df.iloc[:, :-1]
      labels = df.iloc[:, -1]
      return features, labels