[MM-25477] - Migrate command webhook store AppError to error (#14703)

* Migrate command webhook store AppError to error

* Migrate command webhook store AppError to error

* Migrate command webhook store AppError to error

* Migrate command webhook store AppError to error

* Migrate command webhook store AppError to error

* Migrate command webhook store AppError to error

* Migrate command webhook store AppError to error

* Changes requested in the review.

* Changing http status

* fix i18n

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in>

store/store.go

@@ -488,9 +488,9 @@ type CommandStore interface {
 }
 
 type CommandWebhookStore interface {
-	Save(webhook *model.CommandWebhook) (*model.CommandWebhook, *model.AppError)
-	Get(id string) (*model.CommandWebhook, *model.AppError)
-	TryUse(id string, limit int) *model.AppError
+	Save(webhook *model.CommandWebhook) (*model.CommandWebhook, error)
+	Get(id string) (*model.CommandWebhook, error)
+	TryUse(id string, limit int) error
 	Cleanup()
 }