Moved the add and import buttons of the settings dialogs into their footer (#1060)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Components/Settings/SettingsPanelDataSources.razor

@@ -6,5 +6,8 @@
     <ExpansionPanel HeaderIcon="@AppIcons.DATABASE" HeaderText="@T("Configure Data Sources")">
         <PreviewBeta ApplyInnerScrollingFix="true"/>
         <DataSourceManagement/>
+        <div class="mt-3 mb-6">
+            <DataSourceAddButtons/>
+        </div>
     </ExpansionPanel>
 }