add files necessary for contribution

Author: jaehyeonpy

README.md

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+## Description
+
+This project replicates Mysql to Elasticsearch, which is incomplete but able to migrate data between the two databases in simple way.
+
+The project is a modified version of [py-mysql-elasticsearch-sync.](https://github.com/zhongbiaodev/py-mysql-elasticsearch-sync)
+
+<br>
+
+
+## Environment
+
+* Cpython 3.8.17
+* Mysql 8.0.33
+* Elasticsearch 8.8.1
+
+
+<br>
+
+
+## Usage
+
+```
+(your virtualenv) pip install -r requirements.txt
+
+(your virtualenv) python src/pymyelarepl.py src/config.yaml
+```
+
+
+<br>
+
+
+## License
+
+MIT

requirements.txt

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+certifi==2023.7.22
+charset-normalizer==3.2.0
+idna==3.4
+mysql-replication==0.43.0
+PyMySQL==1.1.0
+PyYAML==6.0.1
+requests==2.31.0
+urllib3==2.0.4