Schedule build images with git sha reference

[didierofrivia]

This PR introduces a series of changes that makes it possible to:

1. Build (and push) images and tag them with it's SHA commit reference
2. Schedules a daily workflow that collects the dependencies (limitador-operator-bundle, authorino-operator-bundle and wasm-shim)latest SHA references and stores it in this repo's action variables
3. Schedules a weekly build, providing the make bundle target the dependencies stored variables already collected.
4. It also provides a workflow_dispatch event, so the user can manually trigger the whole bundle build with specific versions

Closes #146

Other PRs that complements this one:

• Tagging images with sha limitador-operator#63
• Tagging images with SHA wasm-shim#30

[eguzki]

what is the value of the weekly build?

[eguzki]

If one of the dependencies is updated, the kuadrant operator generates a new bundle to update the dependency?

[eguzki]

Do we still build operator bundle with references to latest?? would be good to have them as well.

[didierofrivia]

@eguzki thanks for the review! in response to your comments:

what is the value of the weekly build?

The weekly build will satisfy the needs of QE of having a "snapshot" of kuadrant operator with every dependency pointing to their sha tag stored at the time.

If one of the dependencies is updated, the kuadrant operator generates a new bundle to update the dependency?

Current solution doesn't support this behaviour, it relies only on the weekly build with the dependencies version stored in action variables. These vars are updated on a daily job requesting the latest reference (commit sha)

Do we still build operator bundle with references to latest?? would be good to have them as well.

We still add the latest tag when the push event targets the main branch.

[eguzki]

let's try this out!