feat: s3 server support (#6088 close #5186)

Currently tested: List, Get, Remove

server/s3/logger.go

@@ -0,0 +1,27 @@
+// Credits: https://pkg.go.dev/github.com/rclone/rclone@v1.65.2/cmd/serve/s3
+// Package s3 implements a fake s3 server for alist
+package s3
+
+import (
+	"fmt"
+
+	"github.com/Mikubill/gofakes3"
+	"github.com/alist-org/alist/v3/pkg/utils"
+)
+
+// logger output formatted message
+type logger struct{}
+
+// print log message
+func (l logger) Print(level gofakes3.LogLevel, v ...interface{}) {
+	switch level {
+	default:
+		fallthrough
+	case gofakes3.LogErr:
+		utils.Log.Errorf("serve s3: %s", fmt.Sprintln(v...))
+	case gofakes3.LogWarn:
+		utils.Log.Infof("serve s3: %s", fmt.Sprintln(v...))
+	case gofakes3.LogInfo:
+		utils.Log.Debugf("serve s3: %s", fmt.Sprintln(v...))
+	}
+}