wip: use tool manager

internal/bootstrap/offline_download.go

@@ -0,0 +1,17 @@
+package bootstrap
+
+import (
+	"github.com/alist-org/alist/v3/internal/offline_download/tool"
+	"github.com/alist-org/alist/v3/pkg/utils"
+)
+
+func InitOfflineDownloadTools() {
+	for k, v := range tool.Tools {
+		res, err := v.Init()
+		if err != nil {
+			utils.Log.Warnf("init tool %s failed: %s", k, err)
+		} else {
+			utils.Log.Infof("init tool %s success: %s", k, res)
+		}
+	}
+}