Add version number in footer

[NBTX]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
Simply add the version number (with short commit hash) to the footer.
Perhaps display a 'Check for updates' or 'Install update' if there is an update available.

Describe alternatives you've considered
n/a

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If this is implemented, should we use the GitHub releases version number or get it from package.json?

[liyasthomas]

That's a good suggestion.