Client: Notifications now appear in center instead

Closes #59

client/src/components/notificationProvider.tsx

@@ -0,0 +1,32 @@
+import { NotificationProvider } from "@refinedev/core";
+import { message } from "antd";
+
+import { UndoableNotification } from "@refinedev/antd/src/components/undoableNotification";
+
+const SpoolmanNotificationProvider: NotificationProvider = {
+  open: ({ key, message: content, type, cancelMutation, undoableTimeout }) => {
+    if (type === "progress") {
+      message.open({
+        key,
+        content: (
+          <UndoableNotification
+            notificationKey={key}
+            message={content}
+            cancelMutation={cancelMutation}
+            undoableTimeout={undoableTimeout}
+          />
+        ),
+        duration: 0,
+      });
+    } else {
+      message.open({
+        key,
+        content,
+        type,
+      });
+    }
+  },
+  close: (key) => message.destroy(key),
+};
+
+export default SpoolmanNotificationProvider;