msg cycles refunded 128

This section is a work in progress.

Examples:

• cycles

import { Canister, ic, nat64, update } from 'azle/experimental';
import { otherCanister } from './other_canister';

export default Canister({
    // Reports the number of cycles returned from the Cycles canister
    sendCycles128: update([], nat64, async () => {
        await ic.call128(otherCanister.receiveCycles128, {
            cycles: 1_000_000n
        });

        return ic.msgCyclesRefunded128();
    })
});