[Feature] Uninstallers

[ItsSim]

Uninstallers should be created for the FreeSO, The Sims Online and Simitone components.

On Mac, simply delete files from the directory.
On Windows, delete files from directory and remove associated registry entries.

Make sure after uninstalling the launcher reflects this immediately in the installer UI (the green checkmark should disappear).

[ItsSim]

Also need to investigate if this can be handled somehow in the InnoSetup uninstaller, so that when you uninstall the launcher from the Windows Control Panel for example, it also uninstalls these components in the same way (as an option of course, people should be able to keep their games installed and play even if the launcher has been uninstalled).

Although this should be considered as lower priority and can be introduced after the first changes are done.