Upgrade and test NET6

[arivera12]

Hello @arivera12, I'd recommend skipping .NET 5 and going straight to .NET 6 in this case as .NET 6 has significant improvements to the byte array interop mechanisms.

Blazor no longer Base64 encodes/decodes byte[], and also natively supports streaming via JSStreamReference/DotNetStreamReference. This'll provide SIGNIFICANT improvements to stability and performance over .NET 5 in this area.

Links:

• https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-6-preview-6/#efficient-byte-array-transfer-in-javascript-interop
• https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-6-preview-7/#blazor-streaming-interop-from-javascript-to-net
• https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-6-preview-7/#large-file-upload-faster-file-uploads-with-blazor
• https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-6-rc-1/#net-to-javascript-streaming

Originally posted by @TanayParikh in #28 (comment)

[arivera12]

Notes:

When passing a byte[] from .NET to JavaScript, the bytes are now received as a Uint8Array instead of as a Base64 encoded string. Code that previously decoded the Base64 encoded string will need to be removed. See the related announcement for details on this breaking change.

[arivera12]

I am missing here the stream management support which will be a huge improvement to add.

What I did to keep backward compatibility with older blazor apps was just adjust the JavaScript part to manage how blazor is transferring the data.