macos pkg workflow signature

[jamesmarkchan]

This story is to update the macos-pkg workflow to create a signed package with valid macos credentials.

objectives / definition of done:

1. verify we can replicate the notarization locally
2. perform signature and notarization in github ci cd workflow

see: .github\workflows\macos-pkg.yml

for history see:

1. Installer for Mac OS #16
2. maven workflow to create pkg (macos) #163

[jamesmarkchan]

@tylermlui can you verify you have everything you need from this original branch before we delete it? gemini believes we can delete it but just in case.

https://github.com/JDiskMark/jdm-java/tree/mac-pkg

i think you want to make sure you can do the notarization with the new maven build branching from dev.