Add Mirabox N1 plugin

[pomeo]

No description provided.

[nekename]

• The icon needs to be square
• Your GitHub repo description says "Unofficial" but it should say "An unofficial" to match the catalogue/other plugins
• Not a requirement, but your GitHub repo is not a proper fork so I can't easily review the changes you made against opendeck-akp153 - could you fork that repo and apply your changes as a commit on top? It provides proper attribution as well then
• After you fix these things I will ask on the Discord so someone who owns the device can test the plugin

[pomeo]

@nekename done