typescript: match showMenu implementation

e.g. from espruino/BangleApps#3804 (comment)

aka:
- espruino/BangleApps#3604
- #2565
- espruino/BangleApps#3609
- #2569

Author: bobrippling

libs/banglejs/jswrap_bangle.c

@@ -484,7 +484,8 @@ Bangle.js 1 is only capable of detecting left/right swipes as it only contains a
 2 zone touchscreen.
 */
 /*TYPESCRIPT
-type TouchCallback = (button: number, xy?: { x: number, y: number }) => void;
+type TouchCallbackXY = { x: number, y: number, type: 0 | 2 };
+type TouchCallback = (button?: number, xy?: TouchCallbackXY) => void;
 */
 /*JSON{
   "type" : "event",

libs/pixljs/jswrap_pixljs.c

@@ -498,7 +498,7 @@ DEPRECATED: Use `E.showMenu`
 type MenuBooleanItem = {
   value: boolean;
   format?: (value: boolean) => string;
-  onchange?: (value: boolean) => void;
+  onchange?: (value: boolean, evt?: TouchCallbackXY) => void;
 };
 
 /**
@@ -507,7 +507,7 @@ type MenuBooleanItem = {
 type MenuNumberItem = {
   value: number;
   format?: (value: number) => string;
-  onchange?: (value: number) => void;
+  onchange?: (value: number, evt?: TouchCallbackXY) => void;
   step?: number;
   min?: number;
   max?: number;
@@ -543,10 +543,10 @@ type Menu = {
   ""?: MenuOptions;
   [key: string]:
     | MenuOptions
-    | (() => void)
+    | ((e?: TouchCallbackXY) => void)
     | MenuBooleanItem
     | MenuNumberItem
-    | { value: string; onchange?: () => void }
+    | { value: string; onchange?: (value: unknown, evt?: TouchCallbackXY) => void }
     | undefined;
 };
 
@@ -555,8 +555,6 @@ type Menu = {
  *\/
 type MenuInstance = {
   draw: () => void;
-  move: (n: number) => void;
-  select: () => void;
   scroller?: MenuScroller; // BangleJS 2
 };