Added custom tile properties to Godot .tscn export format (#3653)

Custom tile properties will now get exported as Custom Data Layers on 
the Godot TileSet resource. 

A Custom Data Layer will be set up for each unique property name used on
a tile that is used in any of a map's tilesets.

NEWS.md

@@ -5,6 +5,7 @@
 * Fixed hover highlight rendering with active parallax factor (#3669)
 * Fixed updating of object selection outlines when changing parallax factor (#3669)
 * Fixed "Offset Map" action to offset all objects when choosing "Whole Map" as bounds
+* Godot 4 plugin: Export custom tile properties as Custom Data Layers (with Kevin Harrison, #3653)
 * AppImage: Updated to Sentry 0.6.3
 * Qt 6: Increased the image allocation limit from 1 GB to 4 GB (#3616)
 

docs/manual/export-tscn.rst

@@ -57,6 +57,17 @@ The ``exportAlternates`` property is necessary when using flipped or rotated
 tiles. This will create 7 alternate tiles for each tile, allowing all flipped
 and rotation combinations.
 
+Tile Properties
+~~~~~~~~~~~~~~~
+
+.. raw:: html
+
+    <div class="new">New in Tiled 1.10.2</div>
+
+All custom properties set on tiles will get exported as `Custom Data Layers
+<https://docs.godotengine.org/en/stable/tutorials/2d/using_tilesets.html#assigning-custom-metadata-to-the-tileset-s-tiles>`__
+of the Godot TileSet resource.
+
 .. _godot4-map-properties:
 
 Map Properties