Target-jsonl-webhdfs

- add overwrite flag for webhdfs

- add connection to webhdfs service

- [7](https://github.com/andyh1203/target-jsonl/pull/7)
Create output dir if it does not exist

- [3](https://github.com/andyh1203/target-jsonl/pull/3)
Add custom name config for filename
- [5](https://github.com/andyh1203/target-jsonl/pull/5)
feat: add adjustment to decimal precision and update singer-python