Use new fswatcher to udpate android packages

packages.go

@@ -1,6 +1,6 @@
 package tun
 
-import E "github.com/sagernet/sing/common/exceptions"
+import "github.com/sagernet/sing/common/logger"
 
 type PackageManager interface {
 	Start() error
@@ -11,7 +11,14 @@ type PackageManager interface {
 	SharedPackageByID(id uint32) (string, bool)
 }
 
+type PackageManagerOptions struct {
+	Callback PackageManagerCallback
+
+	// Logger is the logger to log errors
+	// optional
+	Logger logger.Logger
+}
+
 type PackageManagerCallback interface {
 	OnPackagesUpdated(packages int, sharedUsers int)
-	E.Handler
 }