Updates movement packets & Fastwalk (#324)

- [X] Updates Movement packets
- [X] Adds OSI fastwalk packets. These aren't used on OSi anymore.
- [X] Adds new movement handling, but looks like the client doesn't use it. (Also leaving the 0x4000 Character List Flag off)
- [X] Adds time sync request handler, but also looks like the client doesn't use it.
- [X] Adds time sync response for time sync, just in case, but it isn't used, so not sure about the arguments.
- [X] Reimplements RunUO's fastwalk to use a circular array on the netstate instead of every mobile
- [X] Removes ClearFastwalkStack from RunUO implementation. This shouldn't be needed anymore

Changed fastwalk settings:
```cs
        public static int WalkFootDelay { get; set; } = 440;
        public static int RunFootDelay { get; set; } = 220;
        public static int WalkMountDelay { get; set; } = 220;
        public static int RunMountDelay { get; set; } = 110;

        public static bool EnableFastwalkPrevention { get; set; } = true;
        public static AccessLevel FastwalkExemptionLevel { get; set; } = AccessLevel.Counselor;

        // If this is changed during runtime, then the steps array needs resizing.
        public static int MaxSteps { get; private set; } = 4;
```

modernuo.json
```json
{
  "settings": {
    "movement.delay.runFoot": "220",
    "movement.delay.runMount": "110",
    "movement.delay.walkFoot": "440",
    "movement.delay.walkMount": "220",
    "movement.enableFastWalkPrevention": "True",
    "movement.fastwalkExemptionLevel": "Counselor",
    "movement.maxSteps": "4"
  }
}
```

Notes about OSI fastwalk:
While it does work, I can't find a benefit in using it because of the variable speeds. If players moved at a single speed then we could refill the stack every X milliseconds with 6 keys and use a naive token bucket implementation.
Unfortunately variable speeds mount/run/walk/etc means we would have to use a leaky bucket algorithm.
If we are using a leaky bucket algorithm with a variable leak, then we don't need to send tokens because we are already tracking it on the server side.

ModernUO vs OSI Fastwalk:
When the fastwalk was implemented on OSI, it used up to 6 tokens. These tokens were probably distributed every 600-750 milliseconds. To get the same effect, the new fastwalk settings might need to be adjusted. I would tweak them and feel free to let me know what worked for you!

Bumps release version

Projects/Server/Network/Packets/MovementPackets.cs

@@ -1,98 +0,0 @@
-/*************************************************************************
- * ModernUO                                                              *
- * Copyright 2019-2020 - ModernUO Development Team                       *
- * Email: hi@modernuo.com                                                *
- * File: MovementPackets.cs                                              *
- *                                                                       *
- * This program is free software: you can redistribute it and/or modify  *
- * it under the terms of the GNU General Public License as published by  *
- * the Free Software Foundation, either version 3 of the License, or     *
- * (at your option) any later version.                                   *
- *                                                                       *
- * You should have received a copy of the GNU General Public License     *
- * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
- *************************************************************************/
-
-namespace Server.Network
-{
-    public sealed class SpeedControl : Packet
-    {
-        public static readonly Packet WalkSpeed = SetStatic(new SpeedControl(2));
-        public static readonly Packet MountSpeed = SetStatic(new SpeedControl(1));
-        public static readonly Packet Disable = SetStatic(new SpeedControl(0));
-
-        public SpeedControl(int speedControl) : base(0xBF)
-        {
-            EnsureCapacity(3);
-
-            Stream.Write((short)0x26);
-            Stream.Write((byte)speedControl);
-        }
-    }
-
-    /// <summary>
-    ///     Causes the client to walk in a given direction. It does not send a movement request.
-    /// </summary>
-    public sealed class MovePlayer : Packet
-    {
-        public MovePlayer(Direction d) : base(0x97, 2)
-        {
-            Stream.Write((byte)d);
-
-            // @4C63B0
-        }
-    }
-
-    public sealed class MovementRej : Packet
-    {
-        public MovementRej(int seq, Mobile m) : base(0x21, 8)
-        {
-            Stream.Write((byte)seq);
-            Stream.Write((short)m.X);
-            Stream.Write((short)m.Y);
-            Stream.Write((byte)m.Direction);
-            Stream.Write((sbyte)m.Z);
-        }
-    }
-
-    public sealed class MovementAck : Packet
-    {
-        private static readonly MovementAck[] m_Cache = new MovementAck[8 * 256];
-
-        private MovementAck(int seq, int noto) : base(0x22, 3)
-        {
-            Stream.Write((byte)seq);
-            Stream.Write((byte)noto);
-        }
-
-        public static MovementAck Instantiate(int seq, Mobile m)
-        {
-            var noto = Notoriety.Compute(m, m);
-
-            var p = m_Cache[noto * seq];
-
-            if (p == null)
-            {
-                m_Cache[noto * seq] = p = new MovementAck(seq, noto);
-                p.SetStatic();
-            }
-
-            return p;
-        }
-    }
-
-    public sealed class NullFastwalkStack : Packet
-    {
-        public NullFastwalkStack() : base(0xBF)
-        {
-            EnsureCapacity(256);
-            Stream.Write((short)0x1);
-            Stream.Write(0x0);
-            Stream.Write(0x0);
-            Stream.Write(0x0);
-            Stream.Write(0x0);
-            Stream.Write(0x0);
-            Stream.Write(0x0);
-        }
-    }
-}