Reduce number of required Wi-Fi NICs

[altf4]

Right now the Rickmote needs 3 separate hardware NICs:

1. A monitor mode NIC with injection support. This is needed to de-auth wireless networks.
2. A client NIC to connect out to the Chromecast's AP.
3. A Master mode NIC running an AP that the Chromecast will connect back to.

All three of those ARE needed. But maybe not all at the same time? Or perhaps a single piece of hardware could perform more than one function.

For example, I've tested a single card running both the AP and doing injection. That "works" but the injection is stuck on the channel that the AP is on.