add all frontend files

node_modules/antd/es/date-picker/locale/hi_IN.js

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+import CalendarLocale from "rc-picker/es/locale/hi_IN";
+import TimePickerLocale from '../../time-picker/locale/hi_IN';
+// Merge into a locale object
+const locale = {
+  lang: Object.assign({
+    placeholder: 'तारीख़ चुनें',
+    yearPlaceholder: 'वर्ष चुनें',
+    quarterPlaceholder: 'तिमाही चुनें',
+    monthPlaceholder: 'महीना चुनिए',
+    weekPlaceholder: 'सप्ताह चुनें',
+    rangePlaceholder: ['प्रारंभ तिथि', 'समाप्ति तिथि'],
+    rangeYearPlaceholder: ['आरंभिक वर्ष', 'अंत वर्ष'],
+    rangeMonthPlaceholder: ['आरंभिक महीना', 'अंत महीना'],
+    rangeWeekPlaceholder: ['आरंभिक सप्ताह', 'अंत सप्ताह']
+  }, CalendarLocale),
+  timePickerLocale: Object.assign({}, TimePickerLocale)
+};
+// All settings at:
+// https://github.com/ant-design/ant-design/blob/master/components/date-picker/locale/example.json
+export default locale;