feat: add script for AIHub data preprocessing

.gitignore

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+*.png
+*.jpg
+*.csv
+*.mp4
+
+*.env
+
+*.zip
+
+__pycache__/
+*.pyc
+
+data/
+
+*.pt
+*.pth
+
+*.wav
+*.tar
+*.bin
+
+.conda/
+.venv/

.gitmodules

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+[submodule "fairseq"]
+	path = fairseq
+	url = https://github.com/facebookresearch/fairseq.git

README_environment.md

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+# 1. 환경 설정
+```bash
+# 1. 레포지토리 클론
+git clone https://github.com/Prometheus-AI-3team/NetfLips.git
+
+cd NetfLips
+
+# 2. 서브모듈(fairseq) update
+git submodule init
+git submodule update
+
+# 2. Conda 기본 환경 생성
+conda env create -f environment.yml
+conda activate unit2a
+
+# 3. Pip 다운그레이드 (메타데이터 에러 방지)
+pip install "pip<24.1"
+
+# 4. PyTorch 설치 (CUDA 11.7 기준)
+pip install torch==1.13.1+cu117 torchvision==0.14.1+cu117 torchaudio==0.13.1+cu117 --extra-index-url https://download.pytorch.org/whl/cu117
+
+# 5. 나머지 라이브러리 설치
+pip install -r requirements.txt
+
+# 6. Fairseq 설치
+cd av2av-main/fairseq
+pip install -e .
+```

av2unit/avhubert/__init__.py

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+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from .hubert import *  # noqa
+# from .hubert_asr import *  # noqa
+from .hubert_dataset import *
+from .hubert_pretraining import *
+# from .hubert_criterion import *