add: get_config in GCViT module

gcvit/models/gcvit.py

@@ -209,6 +209,29 @@ def build_graph(self, input_shape=(224, 224, 3)):
     def summary(self, input_shape=(224, 224, 3)):
         return self.build_graph(input_shape).summary()
 
+    def get_config(self):
+        config = super().get_config()
+        config.update(
+            {
+                "window_size": self.window_size,
+                "dim": self.dim,
+                "depths": self.depths,
+                "num_heads": self.num_heads,
+                "drop_rate": self.drop_rate,
+                "mlp_ratio": self.mlp_ratio,
+                "qkv_bias": self.qkv_bias,
+                "qk_scale": self.qk_scale,
+                "attn_drop": self.attn_drop,
+                "path_drop": self.path_drop,
+                "layer_scale": self.layer_scale,
+                "resize_query": self.resize_query,
+                "global_pool": self.global_pool,
+                "num_classes": self.num_classes,
+                "head_act": self.head_act
+            }
+        )
+        return config
+
 
 # load standard models
 def GCViTXXTiny(