Extend current video upload API with byte array source

[Hixon10]

Hello,

At present, you have only file based video upload API:

var localFilePath = "path/to/video_file.mov";

// Asynchronously
var response = await jwplatformApi.UploadAsync(videoInfo, localFilePath);

However, there is a case, when you receive file via some API (like REST) from user, and you want to upload this video to https://www.jwplayer.com/. So, you have no this video on your disk, and you have 2 options. Either you need to save user video to the disk before uploading to jwplayer, or you cannot use jwplatformApi.UploadAsync() API.

I would like to have byte array based upload API. It may looks like this:

byte[] fileBytes = ...
var response = await jwplatformApi.UploadAsync(videoInfo, fileBytes);