Keep UploadFile and UploadFileV2 signature consistent

[Shivam Chaturvedi]

Description

Would it be possible to make UploadFileV2 analogous to UploadFile. The naming of the params struct as well as the expected parameters are different (e.g. UploadFile accepted a slice of channel IDs whereas UploadFileV2 only accepts a single channel as parameter.)
A documentation or like a sample code for it will also help.

Following up from this
#1108 (comment)