fix(plugins): scans default plugin path

pkg/plugins/plugins.go

@@ -45,6 +45,7 @@ func Init() error {
 	}
 
 	scan(path.Join(setting.StaticRootPath, "app/plugins"))
+	scan(path.Join(setting.StaticRootPath, setting.PluginsPath))
 	checkPluginPaths()
 	// checkDependencies()
 	return nil