input: Write a function to create a web scraper using Python’s Selenium that retrieves data from an online store and prints the names of the products after performing a search. The function should take the search keyword as an input and return the list of product names.
  assert webscraper("shoes")==["Leather Shoe", "Sports Shoe", "Sneaker"]
  assert webscraper("shirt")==["Plain Shirt", "T-Shirt", "Polo Shirt"]
  assert webscraper("book")==["Science Book", "Fiction Book", "History Book"]
  assert webscraper("")==[]
output: def webscraper(search_keyword):
      from selenium import webdriver
      from selenium.webdriver.common.by import By
      from selenium.webdriver.common.keys import Keys
      import time
      
      driver = webdriver.Chrome()
      driver.get("https://example-online-store.com")
      
      search_box = driver.find_element(By.NAME, "search")
      search_box.send_keys(search_keyword)
      search_box.send_keys(Keys.RETURN)
      
      time.sleep(2)
      
      product_names = driver.find_elements(By.CLASS_NAME, "product-name")
      names = [name.text for name in product_names]
      
      driver.quit()
      
      return names