add cheatsheet check script

scripts/cheatsheet/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/jesseduffield/lazygit/pkg/cheatsheet"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		log.Fatal("Please provide a command: one of 'generate', 'check'")
+	}
+
+	command := os.Args[1]
+
+	switch command {
+	case "generate":
+		cheatsheet.Generate()
+		fmt.Printf("\nGenerated cheatsheets in %s\n", cheatsheet.GetDir())
+	case "check":
+		cheatsheet.Check()
+	default:
+		log.Fatal("\nUnknown command. Expected one of 'generate', 'check'")
+	}
+}