- Database namespace is now NadekoBot.Db

- Db related code is now in src/NadekoBot/Db
- Finished major part of the db refactor, but many optimizations are left to be made

src/NadekoBot/Db/Models/Poll.cs

@@ -0,0 +1,20 @@
+using NadekoBot.Common.Collections;
+using System.Collections.Generic;
+
+namespace NadekoBot.Core.Services.Database.Models
+{
+    public class Poll : DbEntity
+    {
+        public ulong GuildId { get; set; }
+        public ulong ChannelId { get; set; }
+        public string Question { get; set; }
+        public IndexedCollection<PollAnswer> Answers { get; set; }
+        public HashSet<PollVote> Votes { get; set; } = new HashSet<PollVote>();
+    }
+
+    public class PollAnswer : DbEntity, IIndexed
+    {
+        public int Index { get; set; }
+        public string Text { get; set; }
+    }
+}