Instance level model selection GrapQL query to get model list

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What is this issue about

We aim to implement an GrapQL interface for the ModelSelection::InstanceFeatureSetting model.

How to setup locally

See this comment.

Implementation proposal

First you'll need to create the 'AiModelSelectionInstanceFeatureSetting' type at ee/app/graphql/types/ai/model_selection/instance/feature_setting_type.rb. Lucky, we have already created shared logic for this. You could implement it that way:

# frozen_string_literal: true

module Types
  module Ai
    module ModelSelection
      module Namespaces
        # rubocop: disable Graphql/AuthorizeTypes -- authorization in resolver/mutation
        class FeatureSettingType < ::Types::Ai::ModelSelection::FeatureSettingBase
          graphql_name 'AiModelSelectionInstanceFeatureSetting'
          description 'Model Selection feature setting for the instance.'
        # rubocop: enable Graphql/AuthorizeTypes
      end
    end
  end
end

You can build a resolver around with it with the neccesary authorization.

The schema has to look like this:

query getAiInstanceFeatureSettings {
  aiModelSelectionInstanceSettings {
    nodes {
      feature
      title
      mainFeature
      selectedModel {
        ref
        name
      }
      defaultModel {
        name
      }
      selectableModels {
        ref
        name
      }
    }
  }
}

Which is the same as this schema without the GroupId argument.