Feature: retoot / repost with content warning / CW

**Is your feature request related to a problem? Please describe.**
I want to repost something that should have a content warning, but does not.

**Describe the solution you'd like**
I´d like to be able to create a new post with a link to the original one, but with added CW

**Describe alternatives you've considered**
- copy link to original post
- create new post
- paste link
- add CW

**Additional context**
This is clearly a nice-to-have thing. Love your work!