Make build_whl workflow reusable outside of the Kolibri repository and customizable

[rtibbles]

Overview

Currently, the build_whl workflow is only reusable within the context of the Kolibri repository.
It also does not fully encompass the functionality of the buildkite workflow, which allows for customization via environment variables.

Description and outcomes

The workflow should be updated to allow it to be reused in github actions in other repositories, and to take additional arguments that allow for customization of requirements, default plugins, and default settings.

[SkySingh04]

Hey there! I assume this issue is still open and available to be picked? Would love to work on this!

[rtibbles]

Hi @SkySingh04 - you can see that this issue is currently assigned, so it is not available to be picked up.