Synthtiger

- Fix seed bug and update test code (https://github.com/clovaai/synthtiger/pull/46)
- Fixed a bug for seed with none value. (https://github.com/clovaai/synthtiger/pull/45#issuecomment-1311229534)
- Added `retry` parameter in `generator` function to make testing easier.
- Updated test code.

- Updated seed feature (https://github.com/clovaai/synthtiger/pull/44)
- Random seed is also applied to main process.
- Added `get_global_random_states`, `set_global_random_states`, `set_global_random_seed` functions.

- Added character bbox and mask outputs (https://github.com/clovaai/synthtiger/pull/33, https://github.com/clovaai/synthtiger/pull/39)
- Added seed option (https://github.com/clovaai/synthtiger/pull/42)
- Changed multi processing structure (https://github.com/clovaai/synthtiger/pull/42)
- The incoming indexes are random when storing data because the task completion times are different.
- Updated ubuntu depends (https://github.com/clovaai/synthtiger/pull/41)
- Updated some style and add some information in `README.md` (https://github.com/clovaai/synthtiger/pull/40)

- Update unicode utils (https://github.com/clovaai/synthtiger/pull/27)

- Support python 3.10.
- Fixed typo in README.
- Wrote README more clearly.
- Updated value type in help.

- Initial release