License Dialog for Redot 4.0.1 Prerelease

Version 4.0.1 doesn't include any bugfixes in particular. However, the project now follows the standard convention of putting addon files inside a folder named "addons," so that it's easy to incorporate into existing projects.

Furthermore, with this release, the project is in the process of transitioning from being primarily targeted at Godot to being primarily targeted at Redot. This transition is being done primarily because I believe the Godot Engine project has lost its focus on its core mission. The Redot Engine staff and community have, for the most part, declared their intention to focus on making a game engine and using it to make games, with no focus on political or controversial social issues. This puts developers whose reputations or even legal status may be negatively impacted by affiliation with the engine in a less precarious situation.

Redot Engine is currently in a prerelease state, and as such so is this addon. When Redot Engine sees a full release, this repository will be updated.