Doc/add ts fsrs workflow

[ishiko732]

public link:

• draw.io : ts-fsrs-workflow.drawio
• google drive : ts-fsrs-workflow.drawio
• github : ts-fsrs-workflow.drawio

[codecov[bot]]

Codecov Report

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

Project coverage is 100.00%. Comparing base (8d61183) to head (c8f8945).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #96 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 7 7 Lines 352 352 Branches 44 44 ========================================= Hits 352 352 ```

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