Added the Object concept

An object is an element in the room. It has a position and a reference to a model. A room has a list of objects
Added input handling

input.txt: user input example that can be used to redirect the program input stream to

input.hpp: Implements the idea behind the user input. More details in the project description
Deleted unused textures
Changed the model rendering strategy to the previous one
Added the dynamic object creation for each room

Each room now has a list of objects, each one with a position

The number of objects each room has is based on the user input and following the project specification

Some recode was needed to make it work