Nov 18 (Reuters) - Affirm Holdings Inc made its application for an initial public offering public on Wednesday, putting the lending startup on course for a stock market debut before the end of the year. The startup, founded by PayPal Holdings Inc co-founder Max Levchin, had confidentially filed for an IPO in October. (Reporting by Anirban Sen in Bengaluru; Editing by Arun Koyyur)