refactor(hero): 优化英雄缩放逻辑和位置配置

重构英雄缩放逻辑，使用统一的缩放计算方法替代硬编码值
调整英雄和怪物的初始位置坐标
在Hero和Monster类中添加size变量控制缩放

assets/script/game/common/config/heroSet.ts

@@ -46,19 +46,19 @@ export const getMonList = ()=>{
 }
 
 export const HeroPos={
-   0:{pos:v3(-240,100,0)},
-   1:{pos:v3(0,100,0)},
-   2:{pos:v3(0,100,0)},
+   0:{pos:v3(-240,105,0)},
+   1:{pos:v3(0,105,0)},
+   2:{pos:v3(0,105,0)},
 }
 export const MonSet = {
-   0:{pos:v3(240,110,0)},
-   1:{pos:v3(240,90,0)},
-   2:{pos:v3(320,110,0)},
-   3:{pos:v3(320,90,0)},
-   4:{pos:v3(360,110,0)},
-   5:{pos:v3(360,90,0)},
-   6:{pos:v3(400,110,0)},
-   7:{pos:v3(400,90,0)},
+   0:{pos:v3(240,115,0)},
+   1:{pos:v3(240,95,0)},
+   2:{pos:v3(320,115,0)},
+   3:{pos:v3(320,95,0)},
+   4:{pos:v3(360,115,0)},
+   5:{pos:v3(360,95,0)},
+   6:{pos:v3(400,115,0)},
+   7:{pos:v3(400,95,0)},
 }
 
 export enum HeroConf{