Apple Silicon support removes support for TFMs older than net6.0

[chyyran]

This commit https://github.com/mellinoe/ImGui.NET/commit/ae3ecd014e416a864cc49ec361ad8f903e22656d adding Apple Silicon support changes the publish TFMs from netstandard2.0 to net6.0. This blocks consumers on any TFM earlier than net6.0 from updates to ImGui.

Please consider making Apple Silicon support conditional on NET 6 rather than removing support completely on older runtimes which may not be able to upgrade easily.

[mellinoe]

Can we just add back netstandard2.0 as a second target?

[chyyran]

Apple Silicon only works on net6.0 , so I'm not sure if theres any conditionals needed there. As long as there aren't any .NET 6 exclusive APIs being used netstandard2.0 consumers should still be able to work.