Feature: Warn users that tiled will be mandatory in a next update

[Palbolsky]

Description

This PR adds a banner to warn users who are still using RMXP for mapping that Tiled will soon become mandatory.
The dialog box that allowed users to choose between RMXP and Tiled mode has been updated accordingly.

Closes #663

Note before testing

The banner will only appear if you are in RMXP mode.
To display it, you can edit your project.studio file and set isTiledMode to false. However, I do not know what the side effects of changing this option might be.

A safer option, but one that requires a very slight change to the code, in the EndSupportRMXPMapsBanner file, at the line 102, change the line by updateBannerVisibility('visible');

Tests to perform

• The dialog box works correctly (Figma)
• The banner shows correctly (Figma)

Screenshot