[DataProcessor] Refactor multimodal processor: extract encoding strategies and unify MM processing pipeline (#7298)

* merge mm processor

fastdeploy/input/encodings/__init__.py

@@ -0,0 +1,23 @@
+# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Multimodal encoding strategies for VL model families."""
+
+from fastdeploy.input.encodings.base_encoding import BaseEncoding
+from fastdeploy.input.encodings.ernie_encoding import ErnieEncoding
+from fastdeploy.input.encodings.paddleocr_encoding import PaddleOCREncoding
+from fastdeploy.input.encodings.qwen_encoding import QwenEncoding
+from fastdeploy.input.encodings.registry import EncodingRegistry
+
+__all__ = ["BaseEncoding", "EncodingRegistry", "ErnieEncoding", "PaddleOCREncoding", "QwenEncoding"]