Support downloading subtitles in bilibili

[thudjx]

$ lux -v

lux: version 0.22.0, A fast and simple video downloader.

$ lux -C https://www.bilibili.com/video/BV1Vg411S7U8

 Site:      哔哩哔哩 bilibili.com
 Title:     Building Great Sentences: Exploring the Writer's Craft P1 01-A Sequence of Words
 Type:      video
 Stream:
     [32-7]  -------------------
     Quality:         清晰 480P avc1.64001F
     Size:            70.10 MiB (73500592 Bytes)
     # download with: lux -f 32-7 ...

Downloading captions...
Downloading danmaku ...
Building Great Sentences：Exploring the Writer’s Craft P1 01-A Sequence of Words.mp4: file already exists, skipping

The subtitle is not downloaded as here. And the captured .xml file contains nothing about subtitle:

<?xml version="1.0" encoding="UTF-8"?><i><chatserver>chat.bilibili.com</chatserver><chatid>822409119</chatid><mission>0</mission><maxlimit>3000</maxlimit><state>0</state><real_name>0</real_name></i>

Is support for subtitle downloading in your dev map? I would really appreciate it if it is!