feat: add step counter.

Based on discussions on bubbletea github for when I got into issues with
view.

https://github.com/charmbracelet/bubbletea/discussions/1343#discussioncomment-12376381

main.go

@@ -18,6 +18,7 @@ const (
 type gol struct {
 	grid   [ROW][COL]int
 	buffer [ROW][COL]int
+	step   int
 }
 
 // Create array that holds field's to check for neighbours
@@ -75,6 +76,7 @@ func (g gol) Life() tea.Model {
 		}
 	}
 	g.grid = g.buffer
+	g.step++
 	return g
 }
 
@@ -95,7 +97,7 @@ func (g gol) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 // Let's draw this all simply
 func (g gol) View() string {
-	var s string
+	s := fmt.Sprintf("Step: %d\n", g.step)
 	// Making sure to not draw the empty field around the array
 	for i := 1; i < ROW-1; i++ {
 		for j := 1; j < COL-1; j++ {