Price reminder and init approval

* Start price reminder grain

* Add config and init grain at startup

* Save init wallet when already init

src/Managing.Api/Controllers/TradingController.cs

@@ -183,7 +183,7 @@ public class TradingController : BaseController
                 return Forbid("You don't have permission to initialize this wallet address. You can only initialize your own wallet addresses.");
             }
 
-            var result = await _tradingService.InitPrivyWallet(publicAddress);
+            var result = await _tradingService.InitPrivyWallet(publicAddress, TradingExchanges.GmxV2);
             return Ok(result);
         }
         catch (Exception ex)