retrieve preset by name, implement array access for presets, analyticsRules

[haydenhoang]

Change Summary

// Changes from
$client->presets->get();
$client->presets->delete('presetName');
$client->presets->put([
            'preset_name' => 'name',
            'preset_data' =>  [
                'value' => [
                    'query_by' => "*",
                ],
            ];
// To
$client->presets->retrieve();
$client->presets['presetName']->delete();
$client->presets->upsert('presetName', [
            'value' => [
                'query_by' => "*",
            ],
        ]);

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