rgb-cln/TODO.md

Looking for things to hack on? Great, here's a partial list:

• Wean off openssl's -lcrypto: use libsodium for all RNG, gmp for base58.
• Grep for FIXME and fix one :)
• Look on https://github.com/ElementsProject/lightning/issues
• Write canned input/output test cases for various conversations, and include them in a form suitable for other implementations to test.