pool: add initiator string to RPC calls

app/src/api/pool.ts

@@ -22,6 +22,8 @@ export const MIN_FEE_RATE_KW = 253;
 // see: https://github.com/lightninglabs/pool/blob/master/order/interface.go#L35
 export const ORDER_VERSION = 2;
 
+const POOL_INITIATOR = 'lit-ui';
+
 /** the names and argument types for the subscription events */
 // eslint-disable-next-line @typescript-eslint/no-empty-interface
 interface PoolEvents {}
@@ -63,6 +65,7 @@ class PoolApi extends BaseApi<PoolEvents> {
     req.setAccountValue(amount);
     req.setRelativeHeight(expiryBlocks);
     req.setConfTarget(confTarget);
+    req.setInitiator(POOL_INITIATOR);
     const res = await this._grpc.request(Trader.InitAccount, req, this._meta);
     return res.toObject();
   }
@@ -176,6 +179,7 @@ class PoolApi extends BaseApi<PoolEvents> {
     }
 
     const req = new POOL.SubmitOrderRequest();
+    req.setInitiator(POOL_INITIATOR);
 
     const order = new POOL.Order();
     order.setTraderKey(b64(traderKey));