[LFX] Design Proposal for Automating the Release Process

[Rishab87]

What would you like to be added:
A pipeline to automate the release process.

Why is this needed:
To save some effort on repetitive release task.

Describe the solution you'd like:

• Create bash script for updating data.yaml.
• Create a pre-release github action which takes in a version number as input and creates the prep PR after running all the tests.
• Release notes template taking main changes from changelog.md + full changelog + welcoming new contributors, so release can be easily created from the command line (or automation).
• Create a post-release github action for sending a PR to k8s.io for image promotion. It will also create PR to merge changes of release back to main.

Few things to decide on:

• Do we need to keep a changelog.md or are we fine with the changelog in github's release?
• Explore and decide on tooling like goreleaser.com ko.build

Additional context:

[rexagod]

/triage accepted
/assign @Rishab87