Implement `articleReplyFrom` filter in ListArticle

[MrOrz]

As discussed in Slack, we are adding this to ListArticleFilter:

articleReplyFrom: { userId: String, appId: String, exists: Boolean }

In order to filter out articles that

• contains my reply (for "我查核過" filter in reply (actually replied article) list)
• does not contain my reply (for navbar "for you" numbering)
• contains a certain user's reply
• contains no certain user's reply

Relates to

• https://github.com/cofacts/rumors-api/issues/60
• https://github.com/cofacts/rumors-api/issues/35
• https://github.com/cofacts/rumors-site/pull/247#discussion_r419149777