feat: Handle deep links

[NateMoeller]

Opens the following types of links

• bicoin:
• lightning:
• lnurl:
• lnurlp:
• lnurlw:

Testing:

• Cold start with lightning: invoice
• Cold start with lnurl:
• Cold start with bitcoin: address
• Cold start with lnurlp: / lnurlw:
• Warm start (app in background) with lightning: invoice
• Warm start with lnurl:
• Warm start with bitcoin: address
• Deep link with single federation (no picker needed)
• Deep link with multiple federations (picker shown)
• Invalid/malformed deep link (show error toast)

[m1sterc001guy]

How have you been testing? Will this work with BIP321 URIs?

[NateMoeller]

I've been throwing links in a url shortening service (tinyurl.com), and clicking on them from my phone and opening with ecash app. And yes it should work with BIP321 URIs.