[FL-2159] BadUSB alt codes (#935)

* badusb: alt code commands
* badusb: demo script update
* usb hid: consumer control descriptor
* BadUsb: remove dangerous type casting, rename variable to match codding style guide

Co-authored-by: あく <alleteam@gmail.com>

firmware/targets/furi-hal-include/furi-hal-usb-hid.h

@@ -255,6 +255,13 @@ typedef void (*HidStateCallback)(bool state, void* context);
 /** ASCII to keycode conversion macro */
 #define HID_ASCII_TO_KEY(x) (((uint8_t)x < 128) ? (hid_asciimap[(uint8_t)x]) : KEY_NONE)
 
+/** HID keyboard leds */
+enum HidKeyboardLeds {
+    HID_KB_LED_NUM          = (1 << 0),
+    HID_KB_LED_CAPS         = (1 << 1),
+    HID_KB_LED_SCROLL       = (1 << 2),
+};
+
 /** HID mouse buttons */
 enum HidMouseButtons {
     HID_MOUSE_BTN_LEFT      = (1 << 0),
@@ -268,6 +275,12 @@ enum HidMouseButtons {
  */
 bool furi_hal_hid_is_connected();
 
+/** Get USB HID keyboard leds state
+ *
+ * @return      leds state
+ */
+uint8_t furi_hal_hid_get_led_state();
+
 /** Set USB HID connect/disconnect callback
  *
  * @param      cb  callback
@@ -316,3 +329,15 @@ bool furi_hal_hid_mouse_release(uint8_t button);
  * @param      delta  number of scroll steps
  */
 bool furi_hal_hid_mouse_scroll(int8_t delta);
+
+/** Set the following consumer key to pressed state and send HID report
+ *
+ * @param      button  key code
+ */
+bool furi_hal_hid_consumer_key_press(uint16_t button);
+
+/** Set the following consumer key to released state and send HID report
+ *
+ * @param      button  key code
+ */
+bool furi_hal_hid_consumer_key_release(uint16_t button);