Add checksums and/or signature to verify trustworthyness

[marcofranssen]

It would be great if future releases would include at a minimum some checksums so I can compare the release against the checksum to verify I downloaded the binary I thought to be downloading.

Another step would be to also add signatures.

See https://github.com/philips-labs/slsa-provenance-action/releases for a project that applies these things on the released assets.

See the github actions workflow on how the checksums and signatures are added.

[iann0036]

Hey @marcofranssen,

Just wanted to note that this is on my radar, but I have a few other things in front of it. Will hopefully get to it soon.

In the meantime, if you're concerned over build security, feel free to pull and build yourself, or even fork.

[marcofranssen]

Helped out a bit with this PR.

#56

[iann0036]

Hey @marcofranssen,

Thanks heaps for that! I've cut a new release with the new checksums file.