Added DbSet for ChangeLog table.
Split Json data models coming from REST Api, from the Database models storing them in a SQLite database. Work to re-engineer endpoints to use Database objects, and copy/update data from the json objects. More work is needed.
Removed OnConfiguring(), as this is done in Program.cs now.
Added Navigation AutoInclude() for Profile subscriptions, and Playlist videos.
Inital Commit of Code base, nothing tested.
