Improve snap turning logic

[BastiaanOlij]

Add defaults in Project Settings

Added a snap deadzone and default snap turning settings to our project settings:

Add user settings system to save user preference

Added a user settings class that saves user settings to user://xtools_user_settings.json

There is also a default UI class that allows developers to just embed the scene into something of their choosing:

In our demo application we nicely integrate this UI on a pedestal:

But similarly we could embed access to this UI in game. We may add a demo for this where the UI can be access on the players wrist or something like that. That's for another day though.

By default have turn movement adhere to user/system settings

Our MovementTurn class now has a new turn mode setting that replaces the smooth tickbox:

This can be:

• Default, we will check the user settings for this (which defaults to our project settings)
• Snap, which sets this to snap turning regardless of our user setting
• Smooth, which sets this to smooth turning regardless of our user setting

Add user setting for player height adjustment

I also added a height adjust user setting:

This simply increases/decreases the player height calculated in the PlayerBody node. This allows you to play games designed for standing up while being seated, or if you're a small/tall person adjust your in game size to make the experience more comfortable.

edit I also added a project setting "player standard height". This setting allows the developer to set the height of the player they are designing the game for.
There is now a button on the user settings UI that takes the current height of the player based on the camera position, compares it to the "standard height" and calculates an adjustment value that makes the player the "standard" height.

[Malcolmnixon]

This works very nicely. I'm quite happy with the ability to extend the project settings window.