Advance Invoice, Delivery, Credit PDF + Custom Number 1.1.54

• compatible to Prestashop 8.2.x+
• fix Warning: Undefined array key 0 in Table->close of 3 Default PDFs

fix Argument 1 passed to TaxCalculatorCore::__construct() must be of the type array line 1606

• fix get PDF template for default group
• fix notice: Creation of dynamic property ba_prestashop_invoice::$secure_key is deprecated
• convert ALL tax_rate to float in PDF, round function
• fix hookActionValidateOrder: change get Tax name, Tax Rate
• add defined('_PS_VERSION_') to all classes
• add .htaccess file to ROOT of module
• fix backoffice.tpl for show name of Delivery in Order Detail

• change license header to 2023
• compatible to Prestashop 8.x+
• change Tools::jsonDecode to json_decode
• change Tools::jsonEncode to json_encode
• add [delivery_number] token in Invoice PDF
• allow [invoice_number] token in Delivery PDF
• allow [invoice_number], [delivery_number] tokens in Credit PDF