New version of the GUI

Quite a lot has changed since the last time I posted about the GUI!

Here's a non-exhaustive list of new features:

• synchronization between Fediseer and Lemmy
• synchronization between Fediseer and Mastodon
• hesitations (basically milder version of censures) are supported
• action log
• evidences / receipts

This is only a short list of some notable features, but I don't want to exhaust you, if you're interested, for a full list of changes you can go to https://github.com/RikudouSage/FediseerGUI/releases.