feat: support qbittorrent (close #3087 in #3333)

* feat(qbittorrent): authorization and logging in support

* feat(qbittorrent/client): support `AddFromLink`

* refactor(qbittorrent/client): check authorization when getting a new client

* feat(qbittorrent/client): support `GetInfo`

* test(qbittorrent/client): update test cases

* feat(qbittorrent): init qbittorrent client on bootstrap

* feat(qbittorrent): support setting webui url via gin

* feat(qbittorrent/client): support deleting

* feat(qbittorrent/client): parse `TorrentStatus` enum when unmarshalling json in `GetInfo()`

* feat(qbittorrent/client): support getting files by id

* feat(qbittorrent): support adding qbittorrent tasks via gin

* refactor(qbittorrent/client): return a `Client` interface in `New()` instead of `*client`

* refactor: task handle

* chore: fix typo

* chore: change path

---------

Co-authored-by: Andy Hsu <i@nn.ci>

internal/qbittorrent/add.go

@@ -0,0 +1,58 @@
+package qbittorrent
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+
+	"github.com/alist-org/alist/v3/internal/conf"
+	"github.com/alist-org/alist/v3/internal/errs"
+	"github.com/alist-org/alist/v3/internal/op"
+	"github.com/alist-org/alist/v3/pkg/task"
+	"github.com/google/uuid"
+	"github.com/pkg/errors"
+)
+
+func AddURL(ctx context.Context, url string, dstDirPath string) error {
+	// check storage
+	storage, dstDirActualPath, err := op.GetStorageAndActualPath(dstDirPath)
+	if err != nil {
+		return errors.WithMessage(err, "failed get storage")
+	}
+	// check is it could upload
+	if storage.Config().NoUpload {
+		return errors.WithStack(errs.UploadNotSupported)
+	}
+	// check path is valid
+	obj, err := op.Get(ctx, storage, dstDirActualPath)
+	if err != nil {
+		if !errs.IsObjectNotFound(err) {
+			return errors.WithMessage(err, "failed get object")
+		}
+	} else {
+		if !obj.IsDir() {
+			// can't add to a file
+			return errors.WithStack(errs.NotFolder)
+		}
+	}
+	// call qbittorrent
+	id := uuid.NewString()
+	tempDir := filepath.Join(conf.Conf.TempDir, "qbittorrent", id)
+	err = qbclient.AddFromLink(url, tempDir, id)
+	if err != nil {
+		return errors.Wrapf(err, "failed to add url %s", url)
+	}
+	DownTaskManager.Submit(task.WithCancelCtx(&task.Task[string]{
+		ID:   id,
+		Name: fmt.Sprintf("download %s to [%s](%s)", url, storage.GetStorage().MountPath, dstDirActualPath),
+		Func: func(tsk *task.Task[string]) error {
+			m := &Monitor{
+				tsk:        tsk,
+				tempDir:    tempDir,
+				dstDirPath: dstDirPath,
+			}
+			return m.Loop()
+		},
+	}))
+	return nil
+}