Initial support for AES in ESP32-H2

[SergioGasquez]

Adds initial support for AES and the aes example.

I've used the aes/esp32cX.rs which I think should work for ESP32-H2 but not sure if we should update the name of it.

Tested the aes example and here is the output:

it took 10680 cycles for hw encrypt
it took 11276 cycles for hw decrypt
it took 171564 cycles for sw encrypt
it took 164788 cycles for sw decrypt
done

[jessebraham]

Conflicts need resolving but LGTM otherwise, thanks!