feat(live2d): implement OpenGL ES 2.0 rendering backend with EGL support

- Add `gl.rs` for OpenGL ES 2.0 and EGL context management.
- Introduce `mod.rs` to organize Live2D plugin modules.
- Create `model.rs` for loading and managing Cubism models, including parameter handling and drawable data extraction.
- Implement shader compilation and rendering context setup for Live2D models.

.ssh_check.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+echo "=== DOWNLOAD TOOLS ==="
+which wget 2>/dev/null && echo "wget: yes" || echo "wget: no"
+which curl 2>/dev/null && echo "curl: yes" || echo "curl: no"
+
+echo "=== OPENGL/EGL LIBS ==="
+ls /usr/lib/aarch64-linux-gnu/libEGL* 2>/dev/null || echo "no EGL lib"
+ls /usr/lib/aarch64-linux-gnu/libGLESv2* 2>/dev/null || echo "no GLES lib"
+ls /usr/lib/aarch64-linux-gnu/libGL* 2>/dev/null || echo "no GL lib"
+
+echo "=== PKG CONFIG ==="
+pkg-config --list-all 2>/dev/null | grep -iE 'egl|gles|gl' || echo "no pkg-config gl"
+
+echo "=== BUILD TOOLS ==="
+gcc --version 2>/dev/null | head -1 || echo "no gcc"
+g++ --version 2>/dev/null | head -1 || echo "no g++"
+cmake --version 2>/dev/null | head -1 || echo "no cmake"
+
+echo "=== RUST ==="
+ls ~/.rustup/toolchains/*/bin/rustc 2>/dev/null | head -1
+~/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc --version 2>/dev/null
+
+echo "=== DONE ==="