feat(VideoCard): add tick icon for followed uploader (#672)

* feat: 关注标识
close [https://github.com/BewlyBewly/BewlyBewly/issues/671]

* refactor(VideoCard):  rename `isFollowed` to `followed`

* feat: add followed tag to videos in mobile recommendation mode

* style(VideoCard): adjust followed tick style

* chore: add corresponding documentation for [API.USER.RELATION_MODIFY]

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Co-authored-by: pengyunfei <pengyunfei@360.cn>
Co-authored-by: Hakadao <a578457889743@gmail.com>

src/contentScripts/views/Home/components/ForYou.vue

@@ -463,6 +463,7 @@ defineExpose({ initData })
           :cover="video.pic"
           :author="video.owner.name"
           :author-face="video.owner.face"
+          :followed="!!video.is_followed"
           :mid="video.owner.mid"
           :view="video.stat.view"
           :danmaku="video.stat.danmaku"
@@ -490,6 +491,7 @@ defineExpose({ initData })
           :cover="`${video.cover}`"
           :author="video?.mask?.avatar.text"
           :author-face="video?.mask?.avatar.cover"
+          :followed="video?.bottom_rcmd_reason === '已关注' || video?.bottom_rcmd_reason === '已關注'"
           :mid="video?.mask?.avatar.up_id "
           :capsule-text="video?.desc?.split('·')[1]"
           :bvid="video.bvid"