Selecting parts of the drawing

[Gunes315]

As a painter I want to select parts of my drawing in order to interact with it

• [ ] When left mouse is clicked and hovered over an area of the grid, all cells inside have to be selected
• [ ] the chosen cells have to be moveable when moving the mouse
• [ ] the chosen cells have to be made transparent when pressing erase
• [ ] the chosen cells have to be colored in the same chosen color when using the drawing tool