feat(ui): release notes modal

[peps]

This adds a Release Notes modal that pops up after a new app version is detected.

Functionality requirements:

• Only show the popup if the app version and fetched release notes version are a match.
• Only show the popup once per version.
• Only fetch the release notes on startup if the versions are not a match

[shanimal08]

LGTM & tested locally with the admin trigger

just a bit concerned about this one in during setup and how it will react with auto update stuff? 😅 might be good for @mmrrnn to have a look through too

[peps]

@shanimal08 good point, I can move the trigger for the modal to happen after setup completes. That way it wont conflict with the updater.

[mmrrnn]

Why not to invoke check_for_updates to ensure there is no update available?

[mmrrnn]

We can also add it to the get_last_changelog_version response

[peps]

@mmrrnn I moved it to the MainView so it shouldn't conflict with the Updater anymore.

One weird requirement for this is that CHANGELOG.md might not be updated in time for a release. So this will pop only when the latestVersion in CHANGELOG.md ( fetched from github main ) matches the appVersion number, and when latestVersion does not equal get_last_changelog_version

[mmrrnn]

Yeah, that's fine 👍

[peps]

@brianp @shanimal08 I've updated the modal to trigger in MainView instead of Setup, so it should no longer conflict with the update modal.

I also updated the Markdown styles for the latest release notes