Add lightning network deposits

[Jzarecta]

Bitcoin lightning network

The lightning network is a protocol which enables fast and quick transactions of Bitcoin with very small fees.

Having this protocol implemented in the wallet will result on an easier reception of value from the most wealthy Blockchain. This will help extend the use of the wallet and the improve the acquisition of TON tokens.

Please consider implementing a lightning network node for the wallet and make it available for the wallet userbase.