Missing arm64 for linux in plugin.yaml

[hwo411]

Hello,

I was trying to build my own linux container for development using install_tooling.sh commands from devspace-containers (the original image does not work for our app) on M1 Mac.

And the command devspace add plugin https://github.com/loft-sh/loft-devspace-plugin failed with

plugin loft does not support linux/arm64

I noticed that ilnux/arm64 is missing in plugin.yaml, though binaries are available:
devspace-plugin-loft-linux-arm64

Could you please add it? The change is simple, but I'm not sure if you update this file manually or via script and because of that I'm not creating a pull request.