This PR implements video thumbnails for `.mov`, `.webm`, and `.mp4` files in the `ContentLinkBlock` component.
Changes:
- Added the `poster` attribute to the `<video>` tag.
- Set the poster source to `{url}#t=1` to capture a clear preview frame at the 1-second mark.
- Verified locally that thumbnails are now correctly displayed instead of a black/empty box.
Closes#73
Reviewed-on: https://gitea.coracle.social/coracle/flotilla/pulls/142
Co-authored-by: Priyanshubhartistm <bhartipriyanshustm@gmail.com>
Co-committed-by: Priyanshubhartistm <bhartipriyanshustm@gmail.com>
4c19ee823b