feat(sltt-app): provide way to jump to passage video via copied video link

[ericpyle]

The electron sltt-app does not expose a URL input field (as does a browser window) whereby a user can jump to a passage video/time via a link from .

Here are some options:

0. Do nothing. Only support this navigation in the web-browser
1. Electron could provide a Go (navigation) menu in the chrome from the main process.
2. Alternatively, the app could watch for changes to the clipboard so if the user copies a link (rather than clicking on it)
3. The client app could provide an custom link Copy sltt-app link for video (only sltt-app team members can view) that uses a custom protocal sltt-app://#/index.html?project={project}&id={_id_video}&time=0.05

Of these, perhaps the Go > Jump to Project/Video/Time menu would be the most straightforward?