feat(framework): support multi-button drag and drop

Adds support for tracking the specific mouse button used during
drag-and-drop operations. This includes a new `ALTBUTTON` event type
to handle cases where a different button is pressed while a drag is
already in progress, and disables the browser context menu by default
in the Phaser configuration to prevent interference.

packages/framework/src/ui/PhaserBridge.tsx

@@ -37,6 +37,7 @@ export const defaultPhaserConfig: Phaser.Types.Core.GameConfig = {
   parent: "phaser-container",
   backgroundColor: "#f9fafb",
   scene: [],
+  disableContextMenu: true,
 };
 
 export interface PhaserGameProps {