feat: Add OAuth client last synced datetime update

Author: taratatach

docs/api/cozy-stack-client.md

@@ -1658,6 +1658,7 @@ Implements `DocumentCollection` API to interact with the /settings endpoint of t
 * [SettingsCollection](#SettingsCollection)
     * [.get(id)](#SettingsCollection+get) ⇒ <code>object</code>
     * [.update(document)](#SettingsCollection+update)
+    * [.updateLastSynced()](#SettingsCollection+updateLastSynced)
 
 <a name="SettingsCollection+get"></a>
 
@@ -1682,6 +1683,12 @@ Updates a settings document
 | --- | --- | --- |
 | document | <code>object</code> | Document to update. Do not forget the _id attribute |
 
+<a name="SettingsCollection+updateLastSynced"></a>
+
+### settingsCollection.updateLastSynced()
+Updates the current OAuth client's last synchronization date
+
+**Kind**: instance method of [<code>SettingsCollection</code>](#SettingsCollection)  
 <a name="SharingCollection"></a>
 
 ## SharingCollection

packages/cozy-stack-client/src/SettingsCollection.js

@@ -83,6 +83,13 @@ class SettingsCollection extends DocumentCollection {
       data: normalizeDoc(resp.data, this.doctype)
     }
   }
+
+  /**
+   * Updates the current OAuth client's last synchronization date
+   */
+  async updateLastSynced() {
+    return this.stackClient.fetchJSON('POST', '/settings/synchronized')
+  }
 }
 
 SettingsCollection.normalizeDoctype = DocumentCollection.normalizeDoctypeJsonApi