Intergrated Large file attachment to a saved message (< 3MB)

Hello Team, 

Please invoke and creates a new function to integrated from 3 steps to one. It's been 3 years nearly now from the release of large attachments. It's time we make it make it generic and then        create a new function for ease of use. Do update the c# code for Large Attachment file upload to message first and then an event code

https://docs.microsoft.com/en-us/graph/sdks/large-file-upload?tabs=csharp