Support for Kemono/Coomer Posts and DMs Pages

### What feature is it?

Support for the following paths:
kemono/posts/popular/:period -1d/1w/1m
kemono/posts/:query
kemono/:source/:id/dms

### What problem does this feature solve?

See new popular posts and DMs

### Additional description

_No response_

### This is not a duplicated feature request or new RSS proposal

- [x] I have searched [existing issues](https://github.com/DIYgod/RSSHub/issues) to ensure this feature has not already been requested and this is not a [new RSS proposal](https://github.com/DIYgod/RSSHub/issues/new?assignees=&labels=RSS+proposal&template=rss_request_en.yml).