[FEAT]: Feature to Backup TabMaster profile and Custom Tabs

[Zodiaksl]

Requesting, as per requested by Tormak on Discord

Steam OS Version: 3.6.12 Steam OS Branch: Beta

Decky Version: v3.0.0 Update Channel: Prerelease Store Channel: Testing

TabMaster: 2.7.1.5a60d10

Updates to Decky or TabMaster sometimes wipes out the TabMaster user profile and custom created tabs

Would it be possible to include a way to export custom tabs to something like email, etc in order to back them up?

Thank you very much