feat: Custom fields in pre-chat form (#4135)

Fixes: #2744

app/javascript/dashboard/i18n/locale/en/inboxMgmt.json

@@ -187,7 +187,7 @@
           }
         }
       },
-			"WHATSAPP": {
+      "WHATSAPP": {
         "TITLE": "WhatsApp Channel",
         "DESC": "Start supporting your customers via WhatsApp.",
         "PROVIDERS": {
@@ -211,7 +211,6 @@
           "PLACEHOLDER": "API key",
           "APPLY_FOR_ACCESS": "Don't have any API key? Apply for access here",
           "ERROR": "Please enter a valid value."
-
         },
         "SUBMIT_BUTTON": "Create WhatsApp Channel",
         "API": {
@@ -432,6 +431,11 @@
     },
     "PRE_CHAT_FORM": {
       "DESCRIPTION": "Pre chat forms enable you to capture user information before they start conversation with you.",
+      "SET_FIELDS": "Pre chat form fields",
+      "SET_FIELDS_HEADER": {
+        "FIELDS": "Fields",
+        "REQUIRED": "Required"
+      },
       "ENABLE": {
         "LABEL": "Enable pre chat form",
         "OPTIONS": {
@@ -464,7 +468,7 @@
         "VALIDATION_ERROR": "Starting time should be before closing time.",
         "CHOOSE": "Choose"
       },
-      "ALL_DAY":"All-Day"
+      "ALL_DAY": "All-Day"
     },
     "IMAP": {
       "TITLE": "IMAP",