image signing and provenance generation

[developer-guy]

Successful workflows: -> https://github.com/developer-guy/paranoia/actions/runs/4973293088 -> https://github.com/developer-guy/paranoia/actions/runs/4973293093

/cc @ianlewis @asraa @laurentsimon @dlorenc @JamesLaverack

[jetstack-bot]

@developer-guy: GitHub didn't allow me to request PR reviews from the following users: asraa, laurentsimon, dlorenc, ianlewis.

Note that only jetstack members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to [this](https://github.com/jetstack/paranoia/pull/91): >Successful workflows: >-> _https://github.com/developer-guy/paranoia/actions/runs/4973293088_ >-> _https://github.com/developer-guy/paranoia/actions/runs/4973293093_ > >/cc @ianlewis @asraa @laurentsimon @dlorenc @JamesLaverack Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[developer-guy]

@JamesLaverack any thoughts on this?

[JamesLaverack]

@JamesLaverack any thoughts on this?

Hey Batuhan, thanks for the poke on this one. I meant to get to it last week but I've been really busy lately.

Honestly this looks great! I was planning to add signing when I found the time. I'm going to merge it just as soon as I gave it a once over. :) Thank you so much for your work on this.

[JamesLaverack]

There we go. Thank you so much again @developer-guy!

[developer-guy]

you're welcome, it was a pleasure to contribute to Jetstack projects! I'm always open to new contribution chances 💯