docs: new integrations method (#4004)

## Changes

- Document new integrations method and endpoint

<!-- Summary by @propel-code-bot -->

---

This PR updates the documentation for the Node SDK to reflect changes in
the integration API methods. It introduces a new format for creating and
updating integrations with object parameter format, while marking the
old method as deprecated. Parameter naming has been changed from
'providerConfigKey' to 'unique_key', and response formats have been
updated to align with the new API structure.

**Key Changes:**
• Added documentation for new integration creation method with object
parameter format
• Renamed parameter 'providerConfigKey' to 'unique_key' throughout the
documentation
• Marked old integration methods as deprecated
• Updated response examples to show new API structure (changes in
response format from 'config' to 'data')

**Affected Areas:**
• Node SDK documentation (docs-v2/reference/sdks/node.mdx)

*This summary was automatically generated by @propel-code-bot*

Author: bodinsamuel

docs-v2/reference/sdks/node.mdx

@@ -173,14 +173,6 @@ await nango.getIntegration(<INTEGRATION-ID>);
     <ResponseField name="include" type="array">
         Include sensitive data. Allowed values: `webhook`
     </ResponseField>
-
-    <ResponseField name="providerConfigKey" type="string" required deprecated>
-        The integration ID.
-    </ResponseField>
-
-    <ResponseField name="includeIntegrationCredentials" type="boolean" deprecated>
-        Defaults to `false`.
-    </ResponseField>
 </Expandable>
 
 **Example Response**
@@ -204,6 +196,9 @@ await nango.getIntegration(<INTEGRATION-ID>);
 Create a new integration.
 
 ```js
+await nango.createIntegration({ provider: <PROVIDER-ID>, unique_key: <UNIQUE_KEY>, [...] });
+
+// Deprecated
 await nango.createIntegration(<PROVIDER-ID>, <INTEGRATION-ID>);
 ```
 
@@ -214,92 +209,73 @@ await nango.createIntegration(<PROVIDER-ID>, <INTEGRATION-ID>);
         The ID of the API provider in Nango (cf. [providers.yaml](https://nango.dev/providers.yaml) for a list of API provider IDs.)
     </ResponseField>
 
-    <ResponseField name="providerConfigKey" type="string" required>
+    <ResponseField name="unique_key" type="string" required>
         The integration ID.
     </ResponseField>
 
-    <ResponseField name="credentials" type="Record<string, string>">
-        The credentials to include depend on the specific integration that you want to create.
+    <ResponseField name="display_name" type="string">
+        The display name of this integration
     </ResponseField>
 
     <ResponseField name="credentials" type="Record<string, string>">
-    <Expandable title="credentials" defaultOpen>
-      <ResponseField name="oauth_client_id" type="string">
-        The OAuth client ID.
-      </ResponseField>
-
-      <ResponseField name="oauth_client_secret" type="string">
-        The OAuth client secret.
-      </ResponseField>
-
-      <ResponseField name="oauth_scopes" type="string">
-        The list of OAuth scopes
-      </ResponseField>
-    </Expandable>
-  </ResponseField>
+        The credentials to include depend on the specific integration that you want to create.
+    </ResponseField>
 </Expandable>
 
 **Example Response**
 
 <Expandable>
 ```json
 {
-    "config": {
+    "data": {
         "unique_key": "slack-nango-community",
-        "provider": "slack"
+        "provider": "slack",
+        "logo": "http://localhost:3003/images/template-logos/slack.svg",
+        "created_at": "2023-10-16T08:45:26.241Z",
+        "updated_at": "2023-10-16T08:45:26.241Z",
     }
 }
 ```
 </Expandable>
 
 ### Update an integration
 
-Edits an integration (only for OAuth APIs).
+Patch an integration, all fields are optional.
 
 ```js
+await nango.updateIntegration({ uniqueKey: <UNIQUE_KEY> }, { [...body] });
+
+// Deprecated
 await nango.updateIntegration(<PROVIDER-ID>, <INTEGRATION-ID>);
 ```
 
 **Parameters**
 
 <Expandable>
-    <ResponseField name="provider" type="string" required>
-        The ID of the API provider in Nango (cf. [providers.yaml](https://nango.dev/providers.yaml) for a list of API provider IDs.)
+    <ResponseField name="unique_key" type="string">
+        The integration ID.
     </ResponseField>
 
-    <ResponseField name="providerConfigKey" type="string" required>
-        The integration ID.
+    <ResponseField name="display_name" type="string">
+        The display name of this integration
     </ResponseField>
 
     <ResponseField name="credentials" type="Record<string, string>">
         The credentials to include depend on the specific integration that you want to create.
     </ResponseField>
-
-    <ResponseField name="credentials" type="Record<string, string>">
-    <Expandable title="credentials" defaultOpen>
-      <ResponseField name="oauth_client_id" type="string">
-        The OAuth client ID.
-      </ResponseField>
-
-      <ResponseField name="oauth_client_secret" type="string">
-        The OAuth client secret.
-      </ResponseField>
-
-      <ResponseField name="oauth_scopes" type="string">
-        The list of OAuth scopes
-      </ResponseField>
-    </Expandable>
-  </ResponseField>
 </Expandable>
 
 **Example Response**
 
 <Expandable>
 ```json
 {
-    "config": {
+    "data": {
         "unique_key": "slack-nango-community",
-        "provider": "slack"
+        "provider": "slack",
+        "logo": "http://localhost:3003/images/template-logos/slack.svg",
+        "created_at": "2023-10-16T08:45:26.241Z",
+        "updated_at": "2023-10-16T08:45:26.241Z",
     }
 }
 ```
@@ -310,13 +286,13 @@ await nango.updateIntegration(<PROVIDER-ID>, <INTEGRATION-ID>);
 Deletes a specific integration.
 
 ```js
-await nango.deleteIntegration(<INTEGRATION-ID>);
+await nango.deleteIntegration(<UNIQUE_KEY>);
 ```
 
 **Parameters**
 
 <Expandable>
-    <ResponseField name="providerConfigKey" type="string" required>
+    <ResponseField name="uniqueKey" type="string" required>
         The integration ID.
     </ResponseField>
 </Expandable>
@@ -326,10 +302,7 @@ await nango.deleteIntegration(<INTEGRATION-ID>);
 <Expandable>
 ```json
 {
-    "config": {
-        "unique_key": "slack-nango-community",
-        "provider": "slack"
-    }
+    "success": true
 }
 ```
 </Expandable>