MiniFlux - Feed entry

1. Support to get all content: You can obtain the content of all subscription sources by using keywords such as `/miniflux/all` or `/miniflux/default`. 2. Support to get the subscription content of a specific subscription source by its ID. Please obtain the subscription source ID on the page where it is located under `Sources` (shortcut keys `g` `f`). The URL for each category (or subscription source) displays its ID information. There are several format options available: 1. Support `/miniflux/feed=[feed_id]`, please replace `[feed_id]` with the actual ID of the subscribed feed (note that it should be just a number without brackets). 2. Support subscribing to multiple feeds using `/miniflux/feed=[feed1_id]&feed=[feed2_id]` or `/miniflux/feeds=[feed1_id]&[feed2_id]`. 3. Additionally, you can use shorthand notation by directly using feed IDs: `/miniflux/[feed1_id]&[feed2_id]`. 3. Further customization options are available based on your needs: 1. All parameters/options provided by MiniFlux are supported ([link](https://miniflux.app/docs/api.html#endpoint-get-feed-entries)). As noted in their documentation, multiple filtering options should be connected with `&`. Except for `status`, only the first occurrence of duplicate filter options will be considered. 2. Specifically, this route defaults to sorting entries from new to old (`direction=desc`). 3. Moreover, this route supports additional options including: - Using the `feed_name` parameter to control title formatting; setting `feed_name=1` will display each title as "Article Title | Feed Name," while default is set at `0`, showing only article titles. - Utilizing the `mark` parameter to specify actions after fetching subscriptions in RSSHub, such as maintaining unchanged state (`unchanged`, default), marking as read (`read`), removing (`removed`) or marking as unread (`unread`). Note that marking as read should not simply be understood as a means for implementing synchronization services; rather, it functions more like an aid for MiniFlux's automatic cleaning feature. - Future support may include utilizing the `link` parameter to control output URLs (this functionality requires corresponding interfaces from MiniFlux). It could involve generating URLs through MiniFlux entity sharing features or original content links. - The output content quantity can be controlled via the 'limit' parameter; although all matching contents are typically outputted by default, **it is recommended that users set this parameter**.