fix: Reverts to RunUO speeds, fixes direction glitching, adds movement speed interpolation (#1695)

> [!IMPORTANT]  
> Please read through these changes, as they changed certain expectations for how the internal AI thinking/movement work.
> Note that some mobs still don't have smooth movement on ClassicUO due to how the client handles animations/movement.

### Summary
- **Important Change**: Mobs will now move at a more regular pace. If the OnThink results in a move, but the cooldown would otherwise prevent the move, then the movement is scheduled on another timer.
- Added a 400ms delay to mobs turning to face a player to attack in order to avoid glitching between moving and turning.
- Reverted AI thinking speeds back to RunUO specific speeds.
- Reverted the AI thinking to moving conversion delays back to RunUO.
- For thinking speeds that are not exactly the predefined speeds from RunUO, there is a new calculation to determine the correct conversion to movement speed. This stops speeds like `0.35` from being faster than `0.3`

> [!NOTE]  
> **Developer Note**
> BaseAI.CheckMove() no longer contains the check for whether or not a mob is on movement cooldown. This function can now be overwritten without causing issues to figuring out that cooldown.

Projects/UOContent/Mobiles/Townfolk/BaseEscortable.cs

@@ -509,9 +509,6 @@ public partial class BaseEscortable : BaseCreature
             return;
         }
 
-        ActiveSpeed = 0.1;
-        PassiveSpeed = 0.2;
-
         ControlOrder = OrderType.Follow;
         ControlTarget = escorter;
 
@@ -520,18 +517,15 @@ public partial class BaseEscortable : BaseCreature
             CantWalk = false;
         }
 
-        CurrentSpeed = 0.1;
+        SetSpeed(0.1, 0.2, false);
     }
 
     public virtual void StopFollow()
     {
-        ActiveSpeed = 0.2;
-        PassiveSpeed = 1.0;
-
         ControlOrder = OrderType.None;
         ControlTarget = null;
 
-        CurrentSpeed = 1.0;
+        SetSpeed(0.2, 1.0);
     }
 
     public virtual Mobile GetEscorter()