feat: add audio system

Readme.md

@@ -15,6 +15,7 @@ Destrum is a C++20 Vulkan rendering/game-engine playground. It contains the core
 * Editor library: docked viewport, play/pause/stop, undo/redo, click to select, gizmos, asset browser
 * Stable asset ids (`.meta` files) and material files (`.dmat`)
 * HDR rendering with exposure and tonemapping (ACES, Khronos PBR Neutral)
+* 3D audio through OpenAL Soft (`AudioSource` / `AudioListener`, WAV and OGG)
 * CMake-based build setup with third-party dependencies as submodules
 
 ## Repository layout
@@ -57,7 +58,8 @@ Most dependencies are included as Git submodules:
 * GLM
 * nlohmann/json
 * spdlog
-* stb
+* stb (image, vorbis)
+* OpenAL Soft
 * tinygltf
 * tinyexr
 * Assimp