fix(core): Core cleanup, adds event loop synchronization, and fixes gumps (#429)

- [X] Cleans up gump packets
- [X] Adds event loop task synchronization
- [X] Moves timer pause and cleans up the delay task timer class
- [X] Cleans up the conserve cpu
- [X] Renames variables to make them consistent with the new style
- [X] Removes process delta recursion checking.
- [X] Properly diposes net states. This fixes edge cases that may cause hanging connections to stay open longer than they should.
- [X] Fixes an issue with gump items not compiling properly

Users can now utilize `Timer.Pause()` since the code will be executed on the proper thread.

```cs
public void async void Talk()
{
    _canTalk = false;
    await Timer.Pause(Utility.RandomMinMax(5000, 8000)); // Talk after 5-8 seconds
    DoTalk();
    await Timer.Pause(Utility.RandomMinMax(12000, 25000)); // Reset ability to talk after 12-25 seconds
    _canTalk = true;
}
```

Projects/Server/Utilities/Utility.cs

@@ -1391,6 +1391,46 @@ namespace Server
             return (int)(unchecked(((i + (i >> 4)) & 0xF0F0F0F0F0F0F0FUL) * 0x101010101010101UL) >> 56);
         }
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static int CountDigits(uint value)
+        {
+            int digits = 1;
+            if (value >= 100000)
+            {
+                value /= 100000;
+                digits += 5;
+            }
 
+            if (value < 10)
+            {
+                // no-op
+            }
+            else if (value < 100)
+            {
+                digits++;
+            }
+            else if (value < 1000)
+            {
+                digits += 2;
+            }
+            else if (value < 10000)
+            {
+                digits += 3;
+            }
+            else
+            {
+                digits += 4;
+            }
+
+            return digits;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static uint DivRem(uint a, uint b, out uint result)
+        {
+            uint div = a / b;
+            result = a - div * b;
+            return div;
+        }
     }
 }