Use different icon formats depending on OS

Contributes to CURA-9365

conandata.yml

@@ -66,7 +66,10 @@
       - "."
       - "../uranium"
       - "../libcharon"
-    icon: "./icons/Cura.ico"
+    icon:
+      Windows: "./icons/Cura.ico"
+      Macos: "./icons/cura.icns"
+      Linux: ".icons/cura-128.png"
 "5.1.0-CURA-9365":
   conan:
     curaengine: "curaengine/latest@ultimaker/cura-9365"
@@ -135,4 +138,7 @@
       - "."
       - "../uranium"
       - "../libcharon"
-    icon: "./icons/Cura.ico"
+    icon:
+      Windows: "./icons/Cura.ico"
+      Macos: "./icons/cura.icns"
+      Linux: ".icons/cura-128.png"

conanfile.py

@@ -188,7 +188,7 @@ class CuraConan(ConanFile):
                     hiddenimports = pyinstaller_metadata["hiddenimports"],
                     collect_all = pyinstaller_metadata["collect_all"],
                     pathex = pathex,
-                    icon = str(Path(self.source_folder, pyinstaller_metadata["icon"]))
+                    icon = pyinstaller_metadata["icon"][str(self.settings.os)]
                 ))
 
     def layout(self):