[FEATURE] Support hidden model for service provider which invisible to common users

[ylwu-amzn]

Generally if user has permission of one model, they can get the model information, or operate on this model like deploy/undeploy. For some use case, user may need a hidden model. For example, service provider may build a default model for their application and don't want anyone see the model content or operate on the model, only the super admin of service provider can manage the model lifecyle.

[ylwu-amzn]

PR https://github.com/opensearch-project/ml-commons/pull/1736