add a reset to defaults button in the settings

[RustoMCSpit]

Describe the solution you'd like

a button which resets the settings to their default and gives a warning that it cant be undone (unless you want to allow it to be undone by ctrl + z)

[panekj]

All settings can be reset by removing settings.toml or deleting its content

[RustoMCSpit]

All settings can be reset by removing settings.toml or deleting its content

i know, but that should be a button in the ui itself. just cause it can be done doesnt mean it's optimal