[REF] pos*: simplify receipt printing

pos*: l10n_co_pos, l10n_fr_pos_cert, l10n_gcc_pos,
          l10n_in_pos, l10n_sa_pos, point_of_sale,
          pos_epson_printer, pos_loyalty, pos_mercury,
          pos_online_payment, pos_restaurant, pos_sale

There is a need to print pos receipts in new environments,
such as the kiosk. In this commit we simplify the steps to
generate the receipt data and introduce a portable mechanism
for printing.

Changes:

- removed the `getOrderReceiptEnv` method; this method
  was returning a lot of data that the receipt was not
  actually using; we now simply use the data from
  `Order.export_for_printing`. This means that it will be much
  easier to recreate this data in other environments, such
  as in the kiosk.

- removed the error prone `generate_wrapped_product_name` method.
  It's aim was to split the orderline name, but this task is much
  better accomplished by declarative css.

- removed the `Orderline.export_for_printing` method; instead,
  we simply use the existing `Orderline.getDisplayData`;

- removed the `AbstractReceiptScreen` component and replaced
  it's functionality with the new `printer` service;
    - using this service means that we were free to remove
      the `pos-receipt-print` div from the root of the pos app;

- made the receipt be a standalone component. It thus benefits
  from all the advantages of components, such as prop validation
  and usage of slots;
    - replaced the `OrderLinesReceipt` template with the generic
      `OrderWidget` component'; this greatly simplifies the code;

- created the `renderer` service. It's goal is to do for components
  what `renderToElement` does for templates; we use this service to
  render the receipt component for printing;

- removed jquery from the EpsonPrinter class, such that it can be
  imported into projects that do not rely on jquery;

- created the `ReceiptHeader` component. This unifies the header
  between all the different receipts; ( before, each receipt was
  implementing it's own header )

Task: 3547597
Part-of: odoo/odoo#137397

addons/pos_epson_printer/static/src/app/epson_printer.js

@@ -61,15 +61,17 @@ export class EpsonPrinter extends BasePrinter {
      * @override
      */
     async sendPrintingJob(img) {
-        const res = await $.ajax({
-            url: this.address,
+        const res = await fetch(this.address, {
             method: "POST",
-            data: img,
+            body: img,
         });
-        const response = $(res).find("response");
+        const body = await res.text();
+        const parser = new DOMParser();
+        const parsedBody = parser.parseFromString(body, "application/xml");
+        const response = parsedBody.querySelector("response");
         return {
-            result: response.attr("success") === "true",
-            printerErrorCode: response.attr("code"),
+            result: response.getAttribute("success") === "true",
+            printerErrorCode: response.getAttribute("code"),
         };
     }
 
@@ -152,21 +154,10 @@ export class EpsonPrinter extends BasePrinter {
      * @override
      */
     getActionError() {
-        const printRes = {
-            successful: false,
-            message: {
-                title: _t("Connection to the printer failed"),
-                body: _t(
-                    "Please check if the printer is still connected. \n" +
-                        "Some browsers don't allow HTTP calls from websites to devices in the network (for security reasons). " +
-                        "If it is the case, you will need to follow Odoo's documentation for " +
-                        "'Self-signed certificate for ePOS printers' and 'Secure connection (HTTPS)' to solve the issue"
-                ),
-            },
-        };
+        const printRes = super.getResultsError();
         if (window.location.protocol === "https:") {
             printRes.message.body += _t(
-                "If you are on a secure server (HTTPS) please make sure you manually accepted the certificate by accessing %s",
+                "If you are on a secure server (HTTPS) please make sure you manually accepted the certificate by accessing %s. ",
                 this.url
             );
         }