First feature drop (Zip + Image dates + AAD App)

This is the first feature drop:

• You can now create a ZIP file of the backup folder for a team (reduce size and easy future upload)
• Images from posts now have the date of the post
• Azure AD scripts (PS + CLI) to setup the app for backup

First public release

The current version is an early build. Please check out the readme.md for more information. You will have to setup your own Azure AD App and point to your local directory.