Blink branding updates for galoy-pay

[agbegin]

• Replace BBW logo with Blink logo in center of QRs (invoice and paycode),
• Replace BBW in the header/nav of the page with Blink icon
• Add small line of text above "Powered by Galoy" --> "Bitcoin Beach Wallet is being renamed to Blink. Learn more: blink.sv"
• Paycode page: Update "username's paycode" to "Pay username@blink.sv"
• Update Lightning address in the navigation menu to "username@blink.sv"
• Update colors of buttons/borders to match blink oranges/gradients
  • view button examples in figma dark mode UI https://www.figma.com/file/rH7A7NquSsXEH7v8eGuYM7/Blink-(BBW)-Mobile-App-Design?node-id=4724%3A98228&t=YVZMGIoU2FP3GqrK-1

Not sure if it makes sense to leave pay.bbw.sv the way it is (old branding) and have pay.blink.sv get new branding (probably not?), but we should consider our plan for sunsetting pay.bbw.sv. (if we do a redirect, it may make sense to communicate the name change very clearly to not surprise anybody)

[Extheoisah]

This work is done!