emulate usb composite device on capable boards (mouse+pendrive+keyboard)

[eadmaster]

example code here, some interesting features to add:

• mouse support for badusb/rubberducky scripts
• mass storage mode as alternative to the webui for file transfers

[bmorcelli]

https://github.com/wakwak-koba/ESP32-NimBLE-Keyboard

Saving the library here to sum it with the USB we already use, to save space with common key arrays

[eadmaster]

just found another example to try, this one also includes a serial port that is currently lost when switching to USB HID mode: https://github.com/espressif/arduino-esp32/blob/master/libraries/USB/examples/CompositeDevice/CompositeDevice.ino