Feature: Collect contact information from users inside the chatbot (#1948)

* Add leads settings to chatflow configuration

* Add leads tab to chatflow configuration with options for lead capture

* Add database entity and migrations for leads

* Add endpoint for adding and fetching leads

* Show lead capture form in UI chat window when enabled

* Add view leads dialog

* Make export leads functional

* Add input for configuring message on successful lead capture

* Add migrations for adding lead email in chat message if available

* show lead email in view messages

* ui touch up

* Remove unused code and update how lead email is shown in view messages dialog

* Fix lead not getting saved

* Disable input when lead form is shown and save lead info to localstorage

* Fix lead capture form not working

* disabled lead save button until at least one form field is turned on, get rid of local storage _LEAD

* add leads API to as whitelist public endpoint

* Send leadEmail in internal chat inputs

* Fix condition for disabling input field and related buttons when lead is enabled/disabled and when lead is saved

* update leads ui

* update error message and alter table add column sqlite migration

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Co-authored-by: Henry <hzj94@hotmail.com>

packages/server/src/Interface.ts

@@ -42,6 +42,7 @@ export interface IChatMessage {
     memoryType?: string
     sessionId?: string
     createdDate: Date
+    leadEmail?: string
 }
 
 export interface IChatMessageFeedback {
@@ -93,6 +94,16 @@ export interface IVariable {
     createdDate: Date
 }
 
+export interface ILead {
+    id: string
+    name?: string
+    email?: string
+    phone?: string
+    chatflowid: string
+    chatId: string
+    createdDate: Date
+}
+
 export interface IUpsertHistory {
     id: string
     chatflowid: string
@@ -200,6 +211,7 @@ export interface IncomingInput {
     chatId?: string
     stopNodeId?: string
     uploads?: IFileUpload[]
+    leadEmail?: string
 }
 
 export interface IActiveChatflows {