Start integrating Hugo in the new plugin

caddy/hugo/utils.go

@@ -0,0 +1,15 @@
+package hugo
+
+import (
+	"os"
+	"os/exec"
+)
+
+// Run executes an external command
+func Run(command string, args []string, path string) error {
+	cmd := exec.Command(command, args...)
+	cmd.Dir = path
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}