feat: added title-line-limit for horizontal-cards style

[ralphocdol]

I have a Twitch RSS that displays like a YouTube videos, but usually twitch title can be 1 line and sometimes 3 lines, which can lead to awkward gap.

This will only add title-line-limit which uses the current css class for truncating texts

   - type: rss
        title: Twitch
        style: horizontal-cards
        title-line-limit: 2
        feeds:
          - url: http://freshrss.local/api/query.php?user=user&t=token&f=rss