multi: rename key_send, key-send and key send to keysend

lnrpc/invoicesrpc/utils.go

@@ -15,7 +15,7 @@ import (
 // decodePayReq decodes the invoice payment request if present. This is needed,
 // because not all information is stored in dedicated invoice fields. If there
 // is no payment request present, a dummy request will be returned. This can
-// happen with just-in-time inserted key send invoices.
+// happen with just-in-time inserted keysend invoices.
 func decodePayReq(invoice *channeldb.Invoice,
 	activeNetParams *chaincfg.Params) (*zpay32.Invoice, error) {
 
@@ -146,7 +146,7 @@ func CreateRPCInvoice(invoice *channeldb.Invoice,
 		State:           state,
 		Htlcs:           rpcHtlcs,
 		Features:        CreateRPCFeatures(invoice.Terms.Features),
-		IsKeySend:       len(invoice.PaymentRequest) == 0,
+		IsKeysend:       len(invoice.PaymentRequest) == 0,
 	}
 
 	if preimage != channeldb.UnknownPreimage {

lnrpc/rpc.proto

@@ -2575,7 +2575,7 @@ message Invoice {
     Indicates if this invoice was a spontaneous payment that arrived via keysend
     [EXPERIMENTAL].
     */
-    bool is_key_send = 25 [json_name = "is_key_send"];
+    bool is_keysend = 25 [json_name = "is_keysend"];
 }
 
 enum InvoiceHTLCState {

lnrpc/rpc.swagger.json

@@ -2943,7 +2943,7 @@
           },
           "description": "/ List of features advertised on the invoice."
         },
-        "is_key_send": {
+        "is_keysend": {
           "type": "boolean",
           "format": "boolean",
           "description": "*\nIndicates if this invoice was a spontaneous payment that arrived via keysend\n[EXPERIMENTAL]."