feat(utils): 添加二进制文件读取器 BinaryReader

refactor(assets): 将着色器路径从 "shaders" 改为 "assets/shaders"
refactor(build): 统一各平台资源目录复制逻辑为 assets 目录

style: 更新 .gitignore 忽略参考代码目录和 .pvf 文件

Game/assets/shaders/sprite.vert

@@ -0,0 +1,20 @@
+#ifdef GL_ES
+  precision mediump float;
+#endif
+
+attribute vec2 a_position;
+attribute vec2 a_texCoord;
+attribute vec4 a_color;
+
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform sampler2D u_texture;
+
+varying vec2 v_texCoord;
+varying vec4 v_color;
+
+void main() {
+  gl_Position = u_projection * u_view * vec4(a_position, 0.0, 1.0);
+  v_texCoord = a_texCoord;
+  v_color = a_color;
+}