[rhacs-docs-4.5] ROX-23494: Add responsibility matrix for ACS

[openshift-cherrypick-robot]

This is an automated cherry-pick of #77107

/assign kcarmichael08

[openshift-ci-robot]

@openshift-cherrypick-robot: Ignoring requests to cherry-pick non-bug issues: ROX-23494

In response to this:

This is an automated cherry-pick of #77107

/assign kcarmichael08

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[ocpdocs-previewbot]

🤖 Tue Jul 16 21:20:31 - Prow CI generated the docs preview:

https://78967--ocpdocs-pr.netlify.app/openshift-acs/latest/cloud_service/acs-cloud-responsibility-matrix.html

[openshift-ci]

@openshift-cherrypick-robot: all tests passed!

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