add generics for Scene and its config key

Author: Chnapy

src/scene/Scene.js

@@ -17,6 +17,9 @@ var Systems = require('./Systems');
  * @memberof Phaser
  * @constructor
  * @since 3.0.0
+ * 
+ * @generic {string=string} K
+ * @genericUse {K | Phaser.Types.Scenes.SettingsConfig.<K>} - [config]
  *
  * @param {(string|Phaser.Types.Scenes.SettingsConfig)} config - Scene specific configuration settings.
  */

src/scene/typedefs/SettingsConfig.js

@@ -1,8 +1,10 @@
 /**
  * @typedef {object} Phaser.Types.Scenes.SettingsConfig
  * @since 3.0.0
+ * 
+ * @generic {string=string} K - [key]
  *
- * @property {string} [key] - The unique key of this Scene. Must be unique within the entire Game instance.
+ * @property {K} [key] - The unique key of this Scene. Must be unique within the entire Game instance.
  * @property {boolean} [active=false] - Does the Scene start as active or not? An active Scene updates each step.
  * @property {boolean} [visible=true] - Does the Scene start as visible or not? A visible Scene renders each step.
  * @property {(false|Phaser.Types.Loader.FileTypes.PackFileConfig)} [pack=false] - An optional Loader Packfile to be loaded before the Scene begins.

types/phaser.d.ts

@@ -50758,7 +50758,7 @@ declare namespace Phaser {
                 /**
                  * If provided as an array, the range defined by `start` and `end` will be ignored and these frame numbers will be used.
                  */
-                frames?: boolean;
+                frames?: boolean | integer[];
             };
 
             type GenerateFrameNumbers = {
@@ -55726,11 +55726,11 @@ declare namespace Phaser {
                 data?: any;
             };
 
-            type SettingsConfig = {
+            type SettingsConfig<K extends string = string> = {
                 /**
                  * The unique key of this Scene. Must be unique within the entire Game instance.
                  */
-                key?: string;
+                key?: K;
                 /**
                  * Does the Scene start as active or not? An active Scene updates each step.
                  */
@@ -74723,12 +74723,12 @@ declare namespace Phaser {
      * 
      * You can also define the optional methods {@link Phaser.Types.Scenes.SceneInitCallback init()}, {@link Phaser.Types.Scenes.ScenePreloadCallback preload()}, and {@link Phaser.Types.Scenes.SceneCreateCallback create()}.
      */
-    class Scene {
+    class Scene<K extends string = string> {
         /**
          * 
          * @param config Scene specific configuration settings.
          */
-        constructor(config: string | Phaser.Types.Scenes.SettingsConfig);
+        constructor(config: K | Phaser.Types.Scenes.SettingsConfig<K>);
 
         /**
          * The Scene Systems. You must never overwrite this property, or all hell will break lose.