Reworking db access to make it 'Future proof'.

SharpRss/Core/IDbAccess.cs

@@ -0,0 +1,9 @@
+
+namespace SharpRss.Core
+{
+    // Interface for implementing the database endpoints.
+    public interface IDbAccess
+    { 
+        
+    }
+}

SharpRss/FetchState.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace SharpRss
+{
+    // To keep a state at fetching item from the database.
+    public class FetchState
+    {
+        public int TakeAmount { get; set; } = 20;
+        public int TotalFetched { get; internal set; }
+        public string DbTableName { get; internal set; } = string.Empty;
+        public DateTime LastFetchTime { get; internal set; }
+    }
+}