feat(Resources): Add ResourcePackage system for asset bundling

- Implement ResourcePackageBuilder for creating .xcp packages
- Implement ResourcePackage for reading packaged assets
- Add unit tests for package builder and package reader

engine/CMakeLists.txt

@@ -189,6 +189,9 @@ add_library(XCEngine STATIC
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Resources/AudioLoader.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Resources/ResourceFileSystem.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Resources/FileArchive.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/Resources/ResourcePackage.cpp
+
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/XCEngine/Resources/ResourcePackage.h
 )
 
 target_include_directories(XCEngine PUBLIC