Add CSPO docs and display it on the overview map

[matofeder]

This PR adds Cluster Stack Provider OpenStack (CSPO) component docs and displays the cluster stacks on the overview map. The CSPO component is part of the KaaS V2 bundle.

Related to #136

CSPO docs refactoring done within: SovereignCloudStack/cluster-stack-provider-openstack#111

@maxwolfs just FYI:

• CSPO is just one sub-project that is part of KaaS V2 (commonly known as cluster-stacks)
• So the hierarchy could be as follows:
  • KaaS V2:
    • Cluster Stacks
    • Cluster Stack Operator
    • Cluster Stack Provider OpenStack
    • Cluster Stacks CTL

[matofeder]

Note:
linter pipeline failed due to issues unrelated to the proposed change:

=========================> MARKDOWN LINK CHECK <=========================

FILE: community/cloud-resources/cloud-resources.md

  2 links checked.

FILE: docs/05-iam/index.md
  [✖] https://docs.scs.community/dev-docs/operations/iam/identity-federation-in-scs → Status: 404

  3 links checked.

  ERROR: 1 dead links found!
  [✖] https://docs.scs.community/dev-docs/operations/iam/identity-federation-in-scs → Status: 404

=========================================================================

[maxwolfs]

Note: linter pipeline failed due to issues unrelated to the proposed change:

=========================> MARKDOWN LINK CHECK <=========================

FILE: community/cloud-resources/cloud-resources.md

  2 links checked.

FILE: docs/05-iam/index.md
  [✖] https://docs.scs.community/dev-docs/operations/iam/identity-federation-in-scs → Status: 404

  3 links checked.

  ERROR: 1 dead links found!
  [✖] https://docs.scs.community/dev-docs/operations/iam/identity-federation-in-scs → Status: 404

=========================================================================

I'll fix that in the 'feat/refactor-operator-introduction` once this PR is merged