Create a custom template for Unity3d projects in Webgl 2.0.

The template must have the following characteristics:
1) A splash screen with a loading bar (bar model to be defined);
2) If running on a smartphone, display a screen asking the user to rotate the screen to the horizontal position, if it is in the portrait position. This screen should run an animation to exemplify.
3) Item 2 above does not depend on whether it is at the beginning or during the execution of the game;
4) There must be a way to configure whether the game will open in a webview, just in case it runs on a smartphone. The opening in this webview must be triggered by the user event (it can be a button);
5) Validations must be carried out in the browser and if there is incompatibility with WebGL 2.0, guidance must be presented to use another more modern device or open on a PC
6) If running on a desktop, it should have the option of a button for fullscreen;
7) A standard Unity3D project must be delivered with this template applied.