AI Wander & Barker (#286)

* Retrofit the AI system with new IoC features.
Fixed bug with turret rotation.

* Added new AI WanderProcessor, and it works.

* RNG walking directions are a bit more random now.

* Wander now actually uses the MoverSystem to move.
Wander now talks when he reaches his destination.

* Adds a new Static Barker AI for vending machines, so that they periodically advertise their brand.

* Barker now says some generic slogans.
Misc bug cleanup.

* Removed useless UsedImplicitly attribute from AI dependencies, suppressed unused variable warnings instead.

Content.Server/Interfaces/GameObjects/Components/Movement/IMoverComponent.cs

@@ -1,4 +1,6 @@
-using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
 
 namespace Content.Server.Interfaces.GameObjects.Components.Movement
 {
@@ -6,6 +8,28 @@ namespace Content.Server.Interfaces.GameObjects.Components.Movement
     // There can only be one.
     public interface IMoverComponent : IComponent
     {
+        /// <summary>
+        ///     Movement speed (m/s) that the entity walks.
+        /// </summary>
+        float WalkMoveSpeed { get; set; }
 
+        /// <summary>
+        ///     Movement speed (m/s) that the entity sprints.
+        /// </summary>
+        float SprintMoveSpeed { get; set; }
+
+        /// <summary>
+        ///     Is the entity Sprinting (running)?
+        /// </summary>
+        bool Sprinting { get; set; }
+
+        /// <summary>
+        ///     Calculated linear velocity direction of the entity.
+        /// </summary>
+        Vector2 VelocityDir { get; }
+
+        GridCoordinates LastPosition { get; set; }
+
+        float StepSoundDistance { get; set; }
     }
 }