adding methods for common situations

[AloisJasa]

motivation – Less Code Is More :)

Prepared methods for common situations – 3 lines of code

$settings->addMappingFieldKeyword(ProductMappingProperty::PROPERTY_ENTITY_ID);
$settings->addMappingFieldKeyword(ProductMappingProperty::PROPERTY_EAN);
$settings->addMappingFieldFloat(ProductMappingProperty::PROPERTY_PRICE_INC_VAT);

instead of 18 lines of code

		$settings->addMappingField(
			new \Spameri\ElasticQuery\Mapping\Settings\Mapping\Field(
				PROPERTY_ENTITY_ID,
				\Spameri\Elastic\Model\ValidateMapping\AllowedValues::TYPE_KEYWORD
			)
		);
		$settings->addMappingField(
			new \Spameri\ElasticQuery\Mapping\Settings\Mapping\Field(
				PROPERTY_EAN,
				\Spameri\Elastic\Model\ValidateMapping\AllowedValues::TYPE_KEYWORD
			)
		);
		$settings->addMappingField(
			new \Spameri\ElasticQuery\Mapping\Settings\Mapping\Field(
				PROPERTY_PRICE_INC_VAT,
				\Spameri\Elastic\Model\ValidateMapping\AllowedValues::TYPE_FLOAT
			)
		);