Fix issue 149 - add some CI workflows

[obnoxxx]

Describe what this PR does

This PR adds some github workflows to the CI as requested in #149

Is there anything that requires special attention

• Note that for mod check, this does not only add a workflow yaml file but also a mod.check make target to be easily invoked locally by developers
• The changes are split into multiple commits: one per item.

Do you have any questions?

no questiions at this time.

Is the change backward compatible?

It should be backward compatible.

Provide any external context for the change, if any.

none.

Related issues

Mention any github issues relevant to this PR. Adding below line will help to auto close the issue once the PR is merged.

Fixes: #149

Future concerns

no future concerns currently.

Checklist:

• [ ] Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide.
• [ ] Reviewed the developer guide on Submitting a Pull Request
• [ ] Pending release notes updated with breaking and/or notable changes for the next major release.
• [ ] Documentation has been updated, if necessary.
• [ ] Unit tests have been added, if necessary.
• [ ] Integration tests have been added, if necessary.

[obnoxxx]

This is marked as draft since it does not cover all points of #149 yet.

[obnoxxx]

@Madhu-1 what remains is to add the stale workflow.

Any special requirements for this one or is it OK to use the rook workflow as a start?

https://github.com/rook/rook/blob/master/.github/workflows/stale.yaml

[parth-gr]

add some CI worjflows -> add some CI workflows

[obnoxxx]

@parth-gr wrote:

add some CI worjflows -> add some CI workflows

good catch, thanks! fixed.

[obnoxxx]

replying to myself:

@Madhu-1 what remains is to add the stale workflow.

Any special requirements for this one or is it OK to use the rook workflow as a start?

https://github.com/rook/rook/blob/master/.github/workflows/stale.yaml

I used that file as a basis after confirmation from @Madhu-1 on chat.

[nb-ohad]

LGTM

[obnoxxx]

marked ready for review since all items of #149 are addressed.