Upload signed binaries

[dnitsch]

Describe the bug
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Mac and Windows users with restrictive policies will require a binary to be signed

for reference https://gist.github.com/ereli/647f4ec9e014bc9cecfb843c764017ff

update makefile task for release to include a signing step

To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots
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Desktop (please complete the following information):

• OS: [e.g. MacOS]
• Version [e.g. 0.1.0]
• Revision [ e.g. s978397s]

Additional context
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