Adds the easy autoloop function which executes a budget update and the
best easy-autoloop swap. The easy-autoloop function re-uses functions
used in the normal autoloop that relate to on-going swaps and traffic
summary.
This commit introduces the new parameters to the protofiles and the
cmd interface. If easy autoloop is enabled we just ignore the rest of
the rules and use the defaults of easy autoloop.
This commit changes the stable protocol version to be the Musig2 protocol.
The experimental version is set to the stable version
in order for the flag to still work if a user has it set.
This commit adds key reveal to MuSig2 loopin swaps' success path. In
this case the client reveals their internal HTLC key to the server when
the swap invoice is settled. With this key the server can sweep the swap
HTLC without any more interaction from the client. We'll do this every
block (after the invoice has been settled).
This commit changes how we create loopin swaps if the client activates
the experimental MuSig2 features. When creating a new loopin swap the
client will create (and store) a new key that will be used as the
sender's internal key when constructing the HTLC. The client will send
the public part to the server and will also receive (and store) the
server's (receiver) internal public key.
This commit adds a new struct to hold all HTLC keys and refactors the
SwapContract which is used by both loopin and loopout swaps to use this
new struct. The newly added internal keys will for now hold the script
keys to keep everything equivalent but are already stored and read back
if the protocol version is set to MuSig2.
This commit adds a new protocol version which will add MuSig2 loop in
and loop out using key reveal and extends the existing protocol with new
message members to be able to pass around htlc internal public keys.
The commit also fixes some minor formatting issues in the server proto.