nip10 marker support

[jb55]

This adds nip10 marker support to damus so that threads should always be correct.

• [x] Read markers on notes
• [x] Add mixed test case https://github.com/damus-io/nostrdb-rs/blob/99d8296fcba5957245ed883e2f3b1c0d1cb16397/src/util/nip10.rs#L436
• [ ] Add markers to notes

[jb55]

@danieldaquino I had to disable the video cache for now to get this build to pass, I'll open a video-cache PR that resumes the work