Implementar sistema de empaquetado de recursos y releases

Sistema completo de packaging para distribuir ViBe3 Physics:

**Core - ResourcePack:**
- source/resource_pack.{h,cpp}: Clase para empaquetar/desempaquetar recursos
- Header binario "VBE3" con índice de archivos
- Encriptación XOR simple para ofuscar contenido
- Checksums para verificar integridad

**Integración en Texture:**
- source/external/texture.cpp: Carga desde pack con fallback a disco
- Método estático Texture::initResourceSystem()
- 1. Intenta cargar desde resources.pack
- 2. Si falla, carga desde carpeta data/ (modo desarrollo)

**Herramienta de empaquetado:**
- tools/pack_resources.cpp: Herramienta CLI para generar .pack
- tools/README.md: Documentación actualizada para ViBe3
- make pack_tool: Compila herramienta
- make resources.pack: Genera pack desde data/

**Sistema de releases (Makefile):**
- Makefile: Adaptado de Coffee Crisis a ViBe3 Physics
- Targets: windows_release, macos_release, linux_release
- APP_SOURCES actualizado con archivos de ViBe3
- Variables: TARGET_NAME=vibe3_physics, APP_NAME="ViBe3 Physics"
- Elimina carpeta config (no usada en ViBe3)

**Recursos de release:**
- release/vibe3.rc: Resource file para Windows (icono)
- release/Info.plist: Bundle info para macOS (.app)
- release/icon.{ico,icns,png}: Iconos multiplataforma
- release/frameworks/SDL3.xcframework: Framework macOS
- release/SDL3.dll: DLL Windows
- release/create_icons.py: Script generador de iconos

**Resultado:**
- resources.pack generado (5 recursos, ~1.3KB)
- Compila correctamente con CMake
- Listo para make windows_release / macos_release

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

release/frameworks/SDL3.xcframework/ios-arm64/SDL3.framework/INSTALL.md

@@ -0,0 +1,41 @@
+
+# Using this package
+
+This package contains SDL built for Xcode.
+
+To use this package in Xcode, drag `SDL3.framework` into your project.
+
+# Documentation
+
+An API reference, tutorials, and additional documentation is available at:
+
+https://wiki.libsdl.org/SDL3
+
+# Example code
+
+There are simple example programs available at:
+
+https://examples.libsdl.org/SDL3
+
+# Discussions
+
+## Discord
+
+You can join the official Discord server at:
+
+https://discord.com/invite/BwpFGBWsv8
+
+## Forums/mailing lists
+
+You can join SDL development discussions at:
+
+https://discourse.libsdl.org/
+
+Once you sign up, you can use the forum through the website or as a mailing list from your email client.
+
+## Announcement list
+
+You can sign up for the low traffic announcement list at:
+
+https://www.libsdl.org/mailing-list.php
+