Add simplified chinese translation (#326)

* Add Chinese Simplified translation

* Add Chinese simplified translation

BTCPayServer/Services/LanguageService.cs

@@ -32,6 +32,7 @@ namespace BTCPayServer.Services
                 new Language("cs-CZ", "Česky"),
                 new Language("is-IS", "Íslenska"),
                 new Language("hr-HR", "Croatian"),
+                new Language("zh-SP", "中文（简体）"),
             };
         }
     }

BTCPayServer/Views/Invoice/Checkout.cshtml

@@ -119,7 +119,8 @@
                 'nl': { translation: locales_nl },
                 'cs-CZ': { translation: locales_cs },
                 'is-IS': { translation: locales_is },
-                'hr-HR': { translation: locales_hr }
+                'hr-HR': { translation: locales_hr },
+                'zh-SP': { translation: locales_zh_sp }
             },
         });
 

BTCPayServer/wwwroot/checkout/js/langs/zh_SP.js

@@ -0,0 +1,54 @@
+const locales_zh_sp = {
+    nested: {
+        lang: '语言'
+    },
+    "Awaiting Payment...": "等待付款中...",
+    "Pay with": "支付方式",
+    "Contact and Refund Email": "联络和退款邮箱",
+    "Contact_Body": "请输入您的邮箱地址。如果您的支付出现问题，我们将会通过此邮箱地址与您联系。",
+    "Your email": "您的邮箱",
+    "Continue": "继续",
+    "Please enter a valid email address": "请输入有效的邮箱地址",
+    "Order Amount": "订单总额",
+    "Network Cost": "网络费用",
+    "Already Paid": "已支付",
+    "Due": "待支付",
+    // Tabs
+    "Scan": "扫一扫",
+    "Copy": "复制",
+    "Conversion": "兑换支付",
+    // Scan tab
+    "Open in wallet": "在钱包中打开",
+    // Copy tab
+    "CompletePay_Body": "请发送{{btcDue}} {{cryptoCode}}至下方地址以完成支付。",
+    "Amount": "金额",
+    "Address": "地址",
+    "Copied": "已复制",
+    // Conversion tab
+    "ConversionTab_BodyTop": "您也可以使用商家支持以外的其他altcoins支付{{btcDue}} {{cryptoCode}}。",
+    "ConversionTab_BodyDesc": "请您注意，这项服务由第三方应用提供，所以我们无法直接获悉和操控第三方应用的具体兑换过程。订单只有在支付款被{{cryptocode}}的区块链接收之后，才会显示已支付。",
+    "Shapeshift_Button_Text": "Altcoins支付",
+    "ConversionTab_Lightning": "闪电网络不支持其他altcoins兑换支付。",
+    // Invoice expired
+    "Invoice expiring soon...": "订单即将过期...",
+    "Invoice expired": "订单已过期 ",
+    "What happened?": "发生了什么?",
+    "InvoiceExpired_Body_1": "您的订单已过期。一个订单只在{{maxTimeMinutes}}分钟内有效。  \
+如果您想要再次支付，可返回{{storeName}}。",
+    "InvoiceExpired_Body_2": "如果您已支付，但付款没有被网络确认接收。这说明我方目前还未收到您的支付款。",
+    "InvoiceExpired_Body_3": "如果您的支付最终被网络拒绝，支付款将被返回您的钱包。根据您使用的钱包不同，可能需要48-72小时。",
+    "Invoice ID": "订单号",
+    "Order ID": "订货号",
+    "Return to StoreName": "返回{{storeName}}。",
+    // Invoice paid
+    "This invoice has been paid": "此订单已支付",
+    // Invoice archived
+    "This invoice has been archived": "此订单已归档",
+    "Archived_Body": "请联系商家获得更多的订单信息或帮助",
+    // Lightning
+    "BOLT 11 Invoice": "BOLT 11 订单",
+    "Node Info": "节点信息(Node Info)",
+    //
+    "txCount": "{{count}}笔交易",
+    "txCount_plural": "{{count}}笔交易"
+};