feat(drivers): new driver UrlTree (close #3268 in #3933)

* feat(drivers): new driver `urls` (close #3268)

* chore: rename

* support customize basic info or get from url

* dfs tree to calculate folder size

* go mod tidy

* add help message

drivers/url_tree/meta.go

@@ -0,0 +1,35 @@
+package url_tree
+
+import (
+	"github.com/alist-org/alist/v3/internal/driver"
+	"github.com/alist-org/alist/v3/internal/op"
+)
+
+type Addition struct {
+	// Usually one of two
+	// driver.RootPath
+	// driver.RootID
+	// define other
+	UrlStructure string `json:"url_structure" type:"text" required:"true" default:"https://jsd.nn.ci/gh/alist-org/alist/README.md\nhttps://jsd.nn.ci/gh/alist-org/alist/README_cn.md\nfolder:\n  CONTRIBUTING.md:1635:https://jsd.nn.ci/gh/alist-org/alist/CONTRIBUTING.md\n  CODE_OF_CONDUCT.md:2093:https://jsd.nn.ci/gh/alist-org/alist/CODE_OF_CONDUCT.md" help:"structure:FolderName:\n  [FileName:][FileSize:][Modified:]Url"`
+	HeadSize     bool   `json:"head_size" type:"bool" default:"false" help:"Use head method to get file size, but it may be failed."`
+}
+
+var config = driver.Config{
+	Name:              "UrlTree",
+	LocalSort:         true,
+	OnlyLocal:         false,
+	OnlyProxy:         false,
+	NoCache:           true,
+	NoUpload:          true,
+	NeedMs:            false,
+	DefaultRoot:       "",
+	CheckStatus:       true,
+	Alert:             "",
+	NoOverwriteUpload: false,
+}
+
+func init() {
+	op.RegisterDriver(func() driver.Driver {
+		return &Urls{}
+	})
+}