feat: Update project structure and configuration files

backend/pkg/utils/md5.go

@@ -0,0 +1,33 @@
+package utils
+
+import (
+	"crypto/md5"
+	"fmt"
+	"io"
+	"os"
+)
+
+// Compare file md5
+func CompareFileMd5(file, md5 string) (bool, error) {
+	fileMd5, err := GetFileMd5(file)
+	if err != nil {
+		return false, err
+	}
+	return fileMd5 == md5, nil
+}
+
+// GetFileMd5
+func GetFileMd5(file string) (string, error) {
+	f, err := os.Open(file)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	h := md5.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("%x", h.Sum(nil)), nil
+}