Handle store with multiple marketplaces

[sahat81]

It should be possible to handle multiple marketplaces by defining marketplaceId as Array in store config file.

For example: in AmazonOrderList class, we can check if marketplaceId is Array then loop and set each ID to options[marketplaceId.Id.$x]

[Dhavalptel]

@sahat81 Exactly I've used same like this

'US' => [
			'merchantId'       => env('mwsMerchantId'),
			'marketplaceId'    => env('mwsMarketplaceId_US'),
			'keyId'            => env('mwsKeyId'),
			'secretKey'        => env('mwsSecretKey'),
			'mwsAuthToken'     => env('mwsAuthToken'),
			'amazonServiceUrl' => env('mwsAmazonServiceUrl_US'),
			'muteLog'          => env('mwsMuteLog', false),
		],
        'CA' => [
			'merchantId'       => env('mwsMerchantId'),
			'marketplaceId'    => env('mwsMarketplaceId_CA'),
			'keyId'            => env('mwsKeyId'),
			'secretKey'        => env('mwsSecretKey'),
			'mwsAuthToken'     => env('mwsAuthToken'),
			'amazonServiceUrl' => env('mwsAmazonServiceUrl_CA'),
			'muteLog'          => env('mwsMuteLog', false),
		],
        'UK' => [
			'merchantId'       => env('mwsMerchantId'),
			'marketplaceId'    => env('mwsMarketplaceId_UK'),
			'keyId'            => env('mwsKeyId'),
			'secretKey'        => env('mwsSecretKey'),
			'mwsAuthToken'     => env('mwsAuthToken'),
			'amazonServiceUrl' => env('mwsAmazonServiceUrl_UK'),
			'muteLog'          => env('mwsMuteLog', false),
		],