:pencil: Add zh readme

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 22.73%. Comparing base (ea725b4) to head (c40783a).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #338 +/- ## ========================================== - Coverage 23.27% 22.73% -0.55% ========================================== Files 275 273 -2 Lines 19094 18746 -348 ========================================== - Hits 4445 4262 -183 + Misses 14227 14095 -132 + Partials 422 389 -33 ``` | [Flag](https://app.codecov.io/gh/go-sigma/sigma/pull/338/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | Coverage Δ | | |---|---|---| | [unit-test-mysql](https://app.codecov.io/gh/go-sigma/sigma/pull/338/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `22.73% <ø> (-0.55%)` | :arrow_down: | | [unit-test-postgresql](https://app.codecov.io/gh/go-sigma/sigma/pull/338/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `22.73% <ø> (-0.55%)` | :arrow_down: | | [unit-test-sqlite3](https://app.codecov.io/gh/go-sigma/sigma/pull/338/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `22.73% <ø> (-0.55%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#carryforward-flags-in-the-pull-request-comment) to find out more.

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