feat: IMAP Email Channel (#3298)

This change allows the user to configure both IMAP and SMTP for an email inbox. IMAP enables the user to see emails in Chatwoot. And user can use SMTP to reply to an email conversation.

Users can use the default settings to send and receive emails for email inboxes if both IMAP and SMTP are disabled.

Fixes #2520

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

@@ -401,6 +401,65 @@
         "VALIDATION_ERROR": "Starting time should be before closing time.",
         "CHOOSE": "Choose"
       }
+    },
+    "IMAP": {
+      "TITLE": "IMAP",
+      "SUBTITLE": "Set your IMAP details",
+      "UPDATE": "Update IMAP settings",
+      "TOGGLE_AVAILABILITY": "Enable IMAP configuration for this inbox",
+      "TOGGLE_HELP": "Enabling IMAP will help the user to recieve email",
+      "EDIT": {
+        "SUCCESS_MESSAGE": "IMAP settings updated successfully",
+        "ERROR_MESSAGE": "Unable to update IMAP settings"
+      },
+      "ADDRESS": {
+        "LABEL": "Address",
+        "PLACE_HOLDER": "Address (Eg: imap.gmail.com)"
+      },
+      "PORT": {
+        "LABEL": "Port",
+        "PLACE_HOLDER": "Port"
+      },
+      "EMAIL": {
+        "LABEL": "Email",
+        "PLACE_HOLDER": "Email"
+      },
+      "PASSWORD": {
+        "LABEL": "Password",
+        "PLACE_HOLDER": "Password"
+      },
+      "ENABLE_SSL": "Enable SSL" 
+    },
+    "SMTP": {
+      "TITLE": "SMTP",
+      "SUBTITLE": "Set your SMTP details",
+      "UPDATE": "Update SMTP settings",
+      "TOGGLE_AVAILABILITY": "Enable SMTP configuration for this inbox",
+      "TOGGLE_HELP": "Enabling SMTP will help the user to send email",
+      "EDIT": {
+        "SUCCESS_MESSAGE": "SMTP settings updated successfully",
+        "ERROR_MESSAGE": "Unable to update SMTP settings"
+      },
+      "ADDRESS": {
+        "LABEL": "Address",
+        "PLACE_HOLDER": "Address (Eg: smtp.gmail.com)"
+      },
+      "PORT": {
+        "LABEL": "Port",
+        "PLACE_HOLDER": "Port"
+      },
+      "EMAIL": {
+        "LABEL": "Email",
+        "PLACE_HOLDER": "Email"
+      },
+      "PASSWORD": {
+        "LABEL": "Password",
+        "PLACE_HOLDER": "Password"
+      },
+      "DOMAIN": {
+        "LABEL": "Domain",
+        "PLACE_HOLDER": "Domain"
+      }
     }
   }
 }