🚧 Add Defrag function

cmd/defrag/main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"bytes"
+
+	"codeberg.org/danjones000/advent-of-code/2024-09/defrag"
+)
+
+func handleErr(err error) {
+	if err == nil {
+		return
+	}
+
+	fmt.Fprintln(os.Stderr, err)
+	os.Exit(1)
+}
+
+func main() {
+	name := os.Args[0]
+
+	input, err := io.ReadAll(os.Stdin)
+	handleErr(err)
+
+	fmt.Fprintln(os.Stderr, "Welcome to ", name)
+	input = bytes.TrimSpace(input)
+
+	blocks, err := defrag.Blocks(input)
+	handleErr(err)
+
+	fmt.Println("@TODO")
+	fmt.Println("Got this")
+	fmt.Printf("%s\n", blocks)
+}