lnrpc: add all_payments opt to DeleteAllPayments

lnrpc/lightning.proto

@@ -4231,6 +4231,10 @@ message DeleteAllPaymentsRequest {
     Only delete failed HTLCs from payments, not the payment itself.
     */
     bool failed_htlcs_only = 2;
+
+    // Delete all payments. NOTE: Using this option requires careful
+    // consideration as it is a destructive operation.
+    bool all_payments = 3;
 }
 
 message DeletePaymentResponse {

lnrpc/lightning.swagger.json

@@ -2268,6 +2268,13 @@
             "in": "query",
             "required": false,
             "type": "boolean"
+          },
+          {
+            "name": "all_payments",
+            "description": "Delete all payments. NOTE: Using this option requires careful\nconsideration as it is a destructive operation.",
+            "in": "query",
+            "required": false,
+            "type": "boolean"
           }
         ],
         "tags": [