Ploigos-step-runner

Bug Fixes
* obscure multi line encrypted values

Enhancements
* added oscap compliance and vulnerability scanning step implementer
* added container image sign and container image signature push step implementers

Other
* Other random QOL fixes

* Improved maven step implementer support for multiple servers
* Fixed an issue where ArgoCD step implementer sometimes created namespace names longer than the k8s character limit
* Improved error messages for failure scenarios in the config-lint and tag-source step implementers

* Changed default branch from master to main
* Refactor openscap step to not require privileged container
* Refactor buildah step to not require privileged container
* Fixed an issue in the tag step where if url not provided and CI tool checks out source using username and tssc config provides a username/pass then everything breaks
* use a settings.xml for all maven steps to allow for disconnected.
* Added a utility function for logging into authenticated container registry
* buildah - update to use container registry login utility
* skopeo - update to use container registry login utility
* Fixed an issue where the LENGTH obfuscated data could be leaked
* clean up __init__ imports to prevent circular imports

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