added the custom icon and username for the outgoing webhook and its response (#9141)

* 8272 added the username and icon as part of the model and persisted the same

* 8272 added the custome icon and name when set to the web hook response

* 8272 changed the infinte loop to timeout after 5 seconds

* 8272  fixed review comments

store/sqlstore/upgrade.go

@@ -476,7 +476,8 @@ func UpgradeDatabaseToVersion51(sqlStore SqlStore) {
 func UpgradeDatabaseToVersion52(sqlStore SqlStore) {
 	// TODO: Uncomment following condition when version 5.2.0 is released
 	// if shouldPerformUpgrade(sqlStore, VERSION_5_1_0, VERSION_5_2_0) {
-
+	sqlStore.CreateColumnIfNotExists("OutgoingWebhooks", "Username", "varchar(64)", "varchar(64)", "")
+	sqlStore.CreateColumnIfNotExists("OutgoingWebhooks", "IconURL", "varchar(1024)", "varchar(1024)", "")
 	// 	saveSchemaVersion(sqlStore, VERSION_5_2_0)
 	// }
 }

store/sqlstore/webhook_store.go

@@ -61,6 +61,8 @@ func NewSqlWebhookStore(sqlStore SqlStore, metrics einterfaces.MetricsInterface)
 		tableo.ColMap("Description").SetMaxSize(128)
 		tableo.ColMap("ContentType").SetMaxSize(128)
 		tableo.ColMap("TriggerWhen").SetMaxSize(1)
+		tableo.ColMap("Username").SetMaxSize(64)
+		tableo.ColMap("IconURL").SetMaxSize(1024)
 	}
 
 	return s