Fix: Change update logic

[Ra2-IFV]

Works but not perfect enough

Summary by Sourcery

重构日期时间处理以简化和保持一致性，添加启动检查以确保所需目录存在，并增强交换数据处理逻辑以支持强制更新和改进数据管理。

增强功能：

• 通过在整个代码库中用 'datetime.now()' 替换 'datetime.datetime.now()' 来简化日期时间的使用。
• 通过添加启动检查来改进目录管理，以在目录不存在时创建所需目录。
• 增强 'get_exchange' 函数以处理强制更新并改进数据处理逻辑。

Original summary in English

## Summary by Sourcery Refactor datetime handling for simplicity and consistency, add a startup check for required directories, and enhance the exchange data handling logic to support force updates and improve data management. Enhancements: - Simplify datetime usage by replacing 'datetime.datetime.now()' with 'datetime.now()' throughout the codebase. - Improve directory management by adding a startup check to create required directories if they do not exist. - Enhance the 'get_exchange' function to handle force updates and improve data handling logic.

[sourcery-ai[bot]]

审核指南由 Sourcery 提供

此拉取请求实现了若干更改，以提高代码的功能性和可维护性。主要更改包括更新 datetime 的使用、修改交换数据处理以及在启动时添加目录检查。

文件级更改

更改	详情	文件
更新 datetime 使用	用 datetime 替换 datetime.datetime 更新 datetime 字符串格式化	modules/self_contained/bf1_info/__init__.py
修改交换数据处理	更改交换数据的文件命名约定 实现强制更新功能 重构交换数据检索和缓存逻辑	modules/self_contained/bf1_info/__init__.py utils/bf1/draw/__init__.py
在启动时添加目录检查	实现一个函数以在应用程序启动时检查并创建所需目录	modules/self_contained/bf1_info/__init__.py

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Original review guide in English

## Reviewer's Guide by Sourcery This pull request implements several changes to improve the functionality and maintainability of the code. The main changes include updating the datetime usage, modifying the exchange data handling, and adding a directory check on startup. ### File-Level Changes | Change | Details | Files | | ------ | ------- | ----- | | Update datetime usage |

• Replace datetime.datetime with datetime
• Update datetime string formatting

| `modules/self_contained/bf1_info/__init__.py` | | Modify exchange data handling |

• Change file naming convention for exchange data
• Implement force update functionality
• Refactor exchange data retrieval and caching logic

| `modules/self_contained/bf1_info/__init__.py`
`utils/bf1/draw/__init__.py` | | Add directory check on startup |

• Implement a function to check and create required directories on application launch

| `modules/self_contained/bf1_info/__init__.py` | ---

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