Adding support for Bitcoin Payments and Requests

[icebaker]

Lighstorm::Bitcoin::Request.decode(
  'bitcoin:175tWpb8K1S7NmH4Zx6rewF9WQrcZv245W?amount=50&label=Luke-Jr&message=Donation%20for%20project%20xyz'
)

action = Lighstorm::Bitcoin::Address.new(
  code: 'bcrt1qq5gl3thf4ka93eluz0guweek9vmeyqyrck3py2'
).pay(
  amount: { millisatoshis: 500_000_000 },
  fee: { satoshis_per_vitual_byte: 1 },
  description: 'Wallet Withdrawal',
  required_confirmations: 6
)