Add support for presets API

[phiHero]

Change Summary

Create or update a preset

preset := &api.PresetUpsertSchema{}
preset.Value.FromMultiSearchSearchesParameter(api.MultiSearchSearchesParameter{
        Searches: []api.MultiSearchCollectionParameters{
            {
                Collection: "books",
            },
        },
    })
// or: preset.Value.FromSearchParameters(api.SearchParameters{Q: "Books"})

client.Presets().Upsert(context.Background(), "listing-view-preset", preset)

Retrieve a preset

client.Preset("listing-view-preset").Retrieve(context.Background())

List all presets

client.Presets().Retrieve(context.Background())

Delete a preset

client.Preset("listing-view-preset").Delete(context.Background())

PR Checklist

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