[Ollama] Allow Control List for AI Models Downloaded

I work as a sys-admin at a University and there is a growing demand for using Ollama in computer labs for teaching. There are a few considerations we have for faciliating AI models in Labs. - Due to data governance policies, we have to consider what Student data is uploaded to cloud services. This limits the kind of models we use on local machines. - We need to ensure we are working inline with the licence terms of a given AI model, the licences seem to vary between models and we don't have the ability to control what model is downloaded. - To optimise performance, we would likely want to have the models installed locally on the machine rather than in user profiles. This feels like a big ask and is more than one feature, but I was keen to better understand whether the following was a consideration for development: - Models stored on local disks rather than user profile (located on network shares). This would optimise read/write locally but also mean models aren't being downloaded fro