Face detection and Text Analysis were added

[ebubekirsezer]

Hello guys, I added the Face detection and Text analysis to the application. You can see the screenshots in the below. My thoughts about the Cognitive Service is really good. It is really easy to apply on our projects. Documentations explains almost everything. I have not applied the Custom Vision on my project before, with this challenge, I had a chance to look the codes about applying custom vision. I did not have any problem while applying the cognitive services, it was fun to apply cognitive services on app.