Sjtrade

fix: onclose cover

- fix: strategy spelling
- fix: snapshot type

fix: strategy spelling

feat: advance cover price set
fix: on close cover issue
refactor: abstract strategy

- [fix: entry pct same as stop price logic](https://github.com/Yvictor/sjtrade/commit/55efae720740be356db00aaf82c03d36075d4d63)
- [feat: add csv reader and custom reader](https://github.com/Yvictor/sjtrade/commit/2f5e0c7e824c9acc3eb66bbbc495eb780958878f)

- refactor: position
- refactor: start with thread pool
- refactor: abstract start execute time
- chore: log format