New filter: "Show Apple Silicon Only Apps"

[porg]

Possible use cases:

• You want to "slim down" on your Apple Silicon Mac, and see whether you got rid of Universal apps (fat binaries)
• You want to see which apps would not be available when migrating to an Intel Mac (for whatever reasons)

[ByronScottJones]

I have create a new fork ByronScottJones/silicon where I have addressed this issue, with multiple options to choose binary type.