feat(game_core): 重构游戏引擎并添加新功能

- 重构了游戏引擎的核心逻辑和架构
- 添加了新的实体组件系统(ECS)
- 实现了简单的碰撞检测和响应
- 新增了地图和子弹功能
- 优化了输入处理和渲染逻辑
- 调整了游戏控制方式

game_core/entities/bullet.c

@@ -0,0 +1,33 @@
+#include "entities.h"
+
+void init_bullet(ge_ecs_t* ecs, ge_entity_t **_bullet) {
+    Assert(ecs != NULL && _bullet != NULL);
+    ge_ecs_add_entity(ecs, _bullet);
+    ge_entity_t* bullet = *_bullet;
+    Assert(bullet != NULL);
+
+    *bullet = (ge_entity_t) {
+        .user_type = BULLET,
+        .component_mask = GE_RENDERABLE_MASK | GE_PHYSICS_MASK | GE_COLLIDER_MASK,
+        .renderable = (ge_render_component_t) {
+            .type = GE_RENDER_COMP_TYPE_RECT,
+            .data.rect = {
+                .size = { 2, 2 },
+                .color = GE_COLOR_RED,
+            }
+        },
+        .physics_body = (ge_physics_component_t) {
+            .type = GE_PHYSICS_COMP_TYPE_VELOCITY,
+            .velocity = { 0, 0 },
+        },
+        .collision = (ge_collision_component_t) {
+            .type = GE_COLLISION_COMP_TYPE_BOX,
+            .layers = LAYER_PLAYER_PROJECTILE,
+            .mask = LAYER_WALL | LAYER_ENEMY_HITBOX,
+            .collider.box = {
+                .relative_pos = { 0, 0 },
+                .size = { 2, 2 },
+            },
+        },
+    };
+}