chore: move SimpleMapCoord to antv/l7-map #2746
                
     Merged
            
            
          
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🤔 这个变动的性质是?
🔗 相关 Issue
#2740
#2734
💡 需求背景和解决方案
在 #2734 的提交中,从L7-maps中复制了一份SimpleMapCoord代码。
(因为不能在L7-map组件导入L7-maps,会有循环引用,反之可以)
现把SimpleMapCoord 迁移到L7-map组件中。L7-maps和L7-map均使用L7-map/map/util下的SimpleMapCoord。
📝 更新日志
☑️ 请求合并前的自查清单