Attempt to add HUD core

module/applications/hud/init.js

@@ -0,0 +1,14 @@
+import { SystemManager } from './system-manager.js'
+import { MODULE, REQUIRED_CORE_MODULE_VERSION } from './constants.js'
+
+Hooks.on('tokenActionHudCoreApiReady', async () => {
+  /**
+   * Return the SystemManager and requiredCoreModuleVersion to Token Action HUD Core
+   */
+  const module = game.modules.get(MODULE.ID)
+  module.api = {
+    requiredCoreModuleVersion: REQUIRED_CORE_MODULE_VERSION,
+    SystemManager
+  }
+  Hooks.call('tokenActionHudSystemReady', module)
+})