feat(fs): get file object

internal/fs/get.go

@@ -0,0 +1,16 @@
+package fs
+
+import (
+	"context"
+	"github.com/alist-org/alist/v3/internal/driver"
+	"github.com/alist-org/alist/v3/internal/operations"
+	"github.com/pkg/errors"
+)
+
+func Get(ctx context.Context, path string) (driver.FileInfo, error) {
+	account, actualPath, err := operations.GetAccountAndActualPath(path)
+	if err != nil {
+		return nil, errors.WithMessage(err, "failed get account")
+	}
+	return account.File(ctx, actualPath)
+}