move flag parsing into /cmd/cli/main.go

solves issue redefined flag when running benchmarks

day-01/cmd/cli/main.go

@@ -0,0 +1,29 @@
+/********************************************************************************
+    Advent of Code 2024 - day-01
+********************************************************************************/
+
+package main
+
+import (
+	"embed"
+	"flag"
+	"fmt"
+	"log"
+
+	problems "github.com/onyx-and-iris/aoc2024/day-01"
+)
+
+//go:embed testdata
+var files embed.FS
+
+func main() {
+	filename := flag.String("f", "input.txt", "input file")
+	flag.Parse()
+
+	data, err := files.ReadFile(fmt.Sprintf("testdata/%s", *filename))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	problems.Solve(data)
+}