docs: NICo release & support model

[deepak-poornachandra]

How would you describe the priority of this documentation request

High

Describe the future/missing documentation

We should publish the NICo release model in the documents. This is to provide visibility to partners into how the NICo release process works — specifically, that releases follow a quarterly cadence, with monthly bug fixes, and hotfixes as needed.Also provide information on the Support model.

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