Add support for printing shoppinglist with thermal printer (#1273)

* Added escpos-php library

* Added button to shoppinglist print menu

* Added to translation

* Added basic printing logic and API call

* Working implementation for printing with the API

* Added openapi json

* Correctly parsing boolean parameter

* Working button in UI

* Change to grocy formatting

* Add Date

* Only show thermal print button when Feature Flag is set

* Fixed API call and added error message parsing

* Undo translation

* Add flag to print quantities as well

* Added printing notes

* Added quantity conversion

* Increse feed

* Fixed that checkbox was undefined, as dialog was already closed

* Added padding

* Formatting

* Added note about user permission

* Fixed error when using notes instead of products

* Review

- Default FEATURE_FLAG_THERMAL_PRINTER to disabled
- Added missing localization strings (and slightly adjusted one)

* Fixed merge conflicts

Co-authored-by: Bernd Bestel <bernd@berrnd.de>

controllers/StockController.php

@@ -512,6 +512,7 @@ class StockController extends BaseController
 		]);
 	}
 
+
 	public function Stockentries(\Psr\Http\Message\ServerRequestInterface $request, \Psr\Http\Message\ResponseInterface $response, array $args)
 	{
 		$usersService = $this->getUsersService();