feat: initial commit with M1-M4 implementation

internal/entities/puck.go

@@ -0,0 +1,19 @@
+package entities
+
+type Vector2 struct {
+	X, Y float64
+}
+
+type Puck struct {
+	Position Vector2
+	Velocity Vector2
+	Radius   float64
+}
+
+func NewPuck(x, y float64) *Puck {
+	return &Puck{
+		Position: Vector2{X: x, Y: y},
+		Velocity: Vector2{X: 0, Y: 0},
+		Radius:   10,
+	}
+}