VLS in stack

[Evanfeenstra]

Running the Validating Lightning Signer as a companion to relay inside stack will let us build the non-custodial signing flow before actually implementing it on hardware.

https://gitlab.com/lightning-signer/docs

• First step will be a Greenlight node
• Next, C-Lightning
• At some point, Sensei node as well https://github.com/L2-Technology/sensei