Drag N Drop mod/preset install + Changelog window + Moved preset button

[SamsamTS]

Mods and presets can easily be installed by dropping the archive(s) directly onto the launcher window: https://github.com/user-attachments/assets/cc491518-ee49-4d67-bb80-fa4c9c4ab25e

Moved the create preset button:

Changelog only appears the first time after a new version has been installed or when clicking on MEMORIA ENGINE at the bottom of the launcher