feat: get/add/edit customer notes (#3806)

* feat: add required module

* feat: add 'addOrEditCustomerNote' function

* feat: add 'getCustomerNote' function

* fix: check for logic availability

* feat: add 'Chat.addOrEditCustomerNote'

* feat: add Chat.getCustomerNote

index.d.ts

@@ -244,6 +244,25 @@ declare namespace WAWebJS {
         /** Save new contact to user's addressbook or edit the existing one */
         saveOrEditAddressbookContact(phoneNumber: string, firstName: string, lastName: string, syncToAddressbook?: boolean): Promise<ChatId>
 
+        /**
+         * Add or edit a customer note
+         * @see https://faq.whatsapp.com/1433099287594476
+         */
+        addOrEditCustomerNote(userId: string, note: string): Promise<void>
+
+        /**
+         * Get a customer note
+         * @see https://faq.whatsapp.com/1433099287594476
+         */
+        getCustomerNote(userId: string): Promise<{
+            chatId: string;
+            content: string;
+            createdAt: number;
+            id: string;
+            modifiedAt: number;
+            type: string;
+        }>
+
         /** Deletes the contact from user's addressbook */
         deleteAddressbookContact(honeNumber: string): Promise<void>
 
@@ -1707,6 +1726,17 @@ declare namespace WAWebJS {
         getPinnedMessages: () => Promise<[Message]|[]>
         /** Sync history conversation of the Chat */
         syncHistory: () => Promise<boolean>
+        /** Add or edit a customer note */
+        addOrEditCustomerNote: (note: string) => Promise<void>
+        /** Get a customer note */
+        getCustomerNote: () => Promise<{
+            chatId: string;
+            content: string;
+            createdAt: number;
+            id: string;
+            modifiedAt: number;
+            type: string;
+        }>
     }
 
     export interface Channel {