add EV logic; 调整 SG logic #337
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- 重构 getValues 方法，返回带日期的时间序列指标 - 更新方法注释，明确无效值和有效值的范围 - 重新组织 SubCondition 文件结构，移动到 logic 目录
- 新增 SG_And 和 SG_Or 信号处理函数，用于处理多个信号的与和或操作 - 添加 AndSignal 和 OrSignal 类实现信号的与和或计算 - 更新 Python 接口，提供 SG_And 和 SG_Or 函数的绑定 - 移除 SG_Logic.h 中的内联与和或操作符重载，改为函数实现
- 新增 EV_Logic.h 头文件，定义了市场环境的逻辑运算符 - 实现了 AddEnvironment、AndEnvironment、DivEnvironment、MultiEnvironment、OrEnvironment 和 SubEnvironment 类 - 这些类支持对两个市场环境进行加、减、乘、除、与、或等逻辑运算 - 优化了 EnvironmentBase 类，增加了 getValue 和 getValues 方法 - 新增的逻辑运算支持将两个市场环境组合成一个新的市场环境
- 修改 AndSignal 和 OrSignal 的 _calculate 方法，增加对买卖信号的分别处理 - 新增 test_SG_Or 和 test_SG_And 测试用例，全面检测逻辑信号的处理 - 优化测试用例，覆盖更多场景，包括空信号、重叠信号等
为 EnvironmentBase 类添加了以下运算符重载： - 逻辑与（&） - 逻辑或（|） - 加法（+） - 减法（-） - 乘法（*） - 除法（/） 这些运算符的重载使得环境判定策略对象可以进行组合和运算，提供了更灵活的策略构建方式。
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