Uploaded first version of bacteria class

See merge request !1

Our simulator's basic version deals in sequential code, only having one bacteria and no mutual exclusion measures implmented but comments record where they may be made use of in further iterations
The code spawns teh single bacteria in a random location on the grid (given it's free) then has the grid simply wander across teh grid for a user specified number of steps.

Added prin statements to allow users to see bacteria activity

Added full (but slightly limited) functionalities regarding grid blocks. Added getters and setters of their position, as well as equals() method

Grid now stores grid blocks and oversees their status. Grid class is an intermeidary for classes to access the grid blocks and their details, and keeps track of their activity.

Bacteria variables fleshed out for this first iteration.

The grid block is the unit that makes up the grid. For this basic iteration, all the grid blocks care about is their x-y position (that's how they're identified in the grid) and if they are occupied or not.

The grid class is the main control for grid blocks which is what the bacteria move on. Grid keeps track of both grid blocks and bacteria, tracking what's available and what is not.

The plan is to have this class be a super class for the cell and the nutrients. Class simply handles moving the object.