AddAttachment
Adds an attachment into a sharepoint list.
Input
| Name | Type | Required | Description |
| ListTitle | String | True | Title of the list item. |
| ItemId | String | True | Id of the list item. |
| FileName | String | True | The name of the file to be added to the document library |
| InputFilePath | String | False | The location of the file to be attached. |
Result Set Columns
| Name | Type | Description |
| Success | Boolean | Indicates whether the operation was successful or not. |
| RelativeUrl | String | The relative URL of the attachment that has been added. |