1131 k8s basic

[PavelJurka]

Related Issue:

#1131

Description of changes:

This issue is about to extend OCSF schema by Kubernetes mapping. The extension should be provided as a separated extension like the current Windows and Linux.

After data analyses the topology copies K8s API - the objects are split by type (workload, cluster resources etc.) with common shared object. Each objects leads to asset and usage is via discovery classes. The hierarchy is defined as bottom-up.

The basic elements defined by this issue:

Cluster - the root element object k8s_cluster - used by **K8s Cluster Inventory Info **
Workload - object of type k8s_workload - used by - K8s Workload Inventory Info
Cluster resource - k8s_cluster_resource used by K8s Cluster resource Inventory Info
Container - k8s_container used by K8s Container Inventory Info

Delete once you have confirmed the following:

TBD

1. Did you add a single line summary of changes to Unreleased section in the CHANGELOG.md file?
2. Have you followed the contribution guidelines?
3. Did you run a local instance of the ocsf-server and ensure it ran without any errors/warnings?
4. Is your PR title in sync with the description?