BartEnocder add set_input_embeddings (#13960)

* BartEnocder add set_input_embeddings

To unify the interface, add set_input_embeddings to BartEncoder.

* BartEnocder add get_input_embeddings

src/transformers/models/bart/modeling_bart.py

@@ -694,6 +694,12 @@ class BartEncoder(BartPretrainedModel):
         self.init_weights()
         self.gradient_checkpointing = False
 
+    def get_input_embeddings(self):
+        return self.embed_tokens
+
+    def set_input_embeddings(self, value):
+        self.embed_tokens = value
+
     def forward(
         self,
         input_ids=None,