14 Main menu screen setup

Closes #14

See merge request !13

Resolve "Screen logic"

Closes #12

See merge request !10

Tank collision

See merge request !11

Simple model + logic for moving tank

See merge request !7

Resolve "Create a highscore endpoint"

Closes #4

See merge request !4

Create MVC folder structure

See merge request !6

Add basic pipeline

See merge request !5

Resolve "Create a users endpoint"

Closes #6

See merge request !3

Resolve "Setup a simple Express project"

Closes #3

See merge request !2

Create libgdx project

See merge request !1