Support photo uploads

[saibaggins]

Need to allow upload of photos related to the event.

Need to think this through:

• Support for this in DialogFlow and WhatsApp/Telegram connectors
• Where do we store the photo(s)?
• Tagging the photos as they get uploaded with the information shared during the chat session (event_summary)
• After uploading send a link to the photos to the reporter.

[saibaggins]

I looked into this a bit and am not sure if there's an elegant way to have users just add photos to their telegram/whatsapp sessions, and pull those images into our storage and store. Maybe you guys can also check.

Another alternative, is to build a simple web photo upload form, and we pass that link in the response and folks click on it and upload photos. We could pass the event information that we have gathered into that upload URL, we put the uploaded photos in firebase storage and tag them with the event info.

Thoughts?

[karthikmuralidharan]

I can take this up @saibaggins