[Feature request] Swap funds from/into LN hosted or non-hosted channels

[Darth-Coin]

The app is great for first time users / merchants. Just open it and be able to receive some sats. Works perfect. But let's take this real case scenario:

• new small merchant want to start testing to accept BTC
• install SBW, take first payment straight to HC, all fine
• during next days, the HC is filled up, no more space to receive. Where to move those sats? Sending to another external service / wallet is an extra step for a noob and creates more confusion. Think about people that have no idea how to use another LN services. Give them simple solutions in-wallet. This is a very good wallet to onboard nocoiners, is simple and "idiot-proof", but let's give them a bit more options, to not get stuck.

Will be nice to have an option to drain sats from HC into onchain, for a specific fee. Like a normal swap. Also the way around, If I have funds in onchain to be able to fund directly a HC or another LN channel already open.