Refactor Live2D plugin and renderer for improved clarity and performance

- Updated EGL and OpenGL ES integration in gl.rs for better context management.
- Simplified error handling and logging in model.rs and plugin.rs.
- Enhanced texture handling and rendering logic in renderer.rs.
- Added a script to find Cargo configuration files for easier debugging.
- Removed unused imports and dead code to clean up the codebase.

src/plugins/live2d/model.rs

@@ -3,8 +3,7 @@
 //! 封装 moc3 读取 → revive → model 初始化 → 参数更新 → drawable 数据提取。
 
 use super::core_ffi::{
-    alloc_aligned, AlignedBuffer, CubismCore, CsmVector2, CsmVector4, CSM_ALIGNOF_MOC,
-    CSM_ALIGNOF_MODEL,
+    alloc_aligned, AlignedBuffer, CubismCore, CsmVector2, CSM_ALIGNOF_MOC, CSM_ALIGNOF_MODEL,
 };
 use anyhow::{anyhow, Context, Result};
 use std::path::Path;
@@ -308,9 +307,3 @@ impl CubismModel {
         }
     }
 }
-
-impl CubismModel {
-    // 保留 CsmVector4 引用避免 unused
-    #[allow(dead_code)]
-    fn _ensure_v4_linked(_v: CsmVector4) {}
-}