Document cluster topologies

[chrisnegus]

Description of changes: This PR documents the different cluster topologies (standalone vs. management/workload) that are supported by EKS Anywhere.

[codecov]

Codecov Report

Merging #4070 (6d29724) into main (a93e07f) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #4070      +/-   ##
==========================================
- Coverage   67.56%   67.55%   -0.02%     
==========================================
  Files         394      396       +2     
  Lines       32001    32005       +4     
==========================================
- Hits        21623    21622       -1     
- Misses       8957     8960       +3     
- Partials     1421     1423       +2     

Impacted Files	Coverage Δ
pkg/features/features.go	25.00% <0.00%> (-9.15%)	⬇️
internal/pkg/api/nutanix.go	81.03% <0.00%> (-2.01%)	⬇️
pkg/validations/cluster.go	91.17% <0.00%> (-1.33%)	⬇️
pkg/curatedpackages/packagecontrollerclient.go	96.36% <0.00%> (-0.23%)	⬇️
pkg/controller/clusters/registry.go	100.00% <0.00%> (ø)
...idations/createvalidations/preflightvalidations.go	100.00% <0.00%> (ø)
...dations/upgradevalidations/preflightvalidations.go	100.00% <0.00%> (ø)
pkg/kubeconfig/fmt.go	0.00% <0.00%> (ø)
pkg/providers/docker/reconciler/reconciler.go	100.00% <0.00%> (ø)
pkg/networking/cilium/reconciler/reconciler.go	86.95% <0.00%> (+0.11%)	⬆️
... and 3 more

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[TerryHowe]

/lgtm

[TerryHowe]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: TerryHowe

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• docs/OWNERS [TerryHowe]

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[chrisnegus]

/cherrypick release-0.12

[eks-distro-pr-bot]

@chrisnegus: new pull request created: #4116

In response to this:

/cherrypick release-0.12

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