Introduce transformation functionality to `AptObject`.

[dresswithpockets]

New values

• float Rotation gets or sets the current rotation of the object.
• Vector2 Up gets the vector representing the up direction of the object after taking its rotation into consideration.
• Vector2 Left gets the vector representing the left direction of the object after taking its rotation into consideration.
• Vector2 Right gets the vector representing the right direction of the object after taking its rotation into consideration.
• Vector2 Down gets the vector representing the down direction of the object after taking its rotation into consideration.

New functionality

• AptObject.Translate(vector2) translates the object in a direction relative to its rotation.
• AptObject.Rotate(float) rotates the object by the value given.

[dresswithpockets]

Since there is functionality here that doesn't necessarily apply to the concept of an AptObject, we're segregating transform functionality to its own class Transform which will be instantiated by AptObject.

[dresswithpockets]

Functionality implemented in commits https://github.com/PhoenixGameDevelopmentTeam/AptitudeEngine/commit/4ffddb3771fd49de2ca875e9383974f752d396f6 and https://github.com/PhoenixGameDevelopmentTeam/AptitudeEngine/commit/07f82e303dc9305d82b8368647d1298cefb83a7b.