Replace legacy Base64 implementation with libbase64

.github/workflows/engine-build.yml

@@ -82,6 +82,7 @@ jobs:
           cp thirdparty/bgfx.cmake/bgfx/3rdparty/directx-headers/LICENSE artifact/OpenTS_THIRD_PARTY_LICENSES/directx-headers.txt
           cp thirdparty/bgfx.cmake/bx/include/tinystl/LICENSE artifact/OpenTS_THIRD_PARTY_LICENSES/tinystl.txt
           cp thirdparty/bgfx.cmake/bimg/3rdparty/astc-encoder/LICENSE.txt artifact/OpenTS_THIRD_PARTY_LICENSES/astc-encoder.txt
+          cp thirdparty/libbase64/LICENSE artifact/OpenTS_THIRD_PARTY_LICENSES/libbase64.txt
           cp thirdparty/licenses/khronos-opengl.txt artifact/OpenTS_THIRD_PARTY_LICENSES/khronos-opengl.txt
           cat thirdparty/licenses/khronos-vulkan-notice.txt \
               thirdparty/bgfx.cmake/bimg/3rdparty/astc-encoder/LICENSE.txt \

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "thirdparty/bgfx.cmake"]
 	path = thirdparty/bgfx.cmake
 	url = https://github.com/bkaradzic/bgfx.cmake.git
+[submodule "thirdparty/libbase64"]
+	path = thirdparty/libbase64
+	url = https://github.com/aklomp/base64.git

THIRD_PARTY_NOTICES.md

@@ -11,6 +11,7 @@ remains under its own license and copyright notices.
 | [DirectX-Headers](https://github.com/microsoft/DirectX-Headers)    | Direct3D API headers used by bgfx         | MIT          |
 | [tinystl](https://github.com/mendsley/tinystl)                     | Containers used internally by bgfx        | BSD 2-Clause |
 | [astc-encoder](https://github.com/ARM-software/astc-encoder)       | ASTC texture processing used by bimg      | Apache-2.0   |
+| [libbase64](https://github.com/aklomp/base64)                      | Base64 encoding for INI data              | BSD 2-Clause |
 | [OpenGL Registry](https://github.com/KhronosGroup/OpenGL-Registry) | OpenGL API headers used by bgfx           | MIT          |
 | [Vulkan Headers](https://github.com/KhronosGroup/Vulkan-Headers)   | Vulkan API headers used by bgfx           | Apache-2.0   |
 

code/CMakeLists.txt

@@ -213,6 +213,7 @@ message(STATUS "${PROJECT_NAME}: Applying linker options...")
 add_dependencies(OpenTS bgfx bx bimg)
 target_link_libraries(OpenTS PRIVATE
     VQALib
+    base64
 
     $<TARGET_FILE:bgfx>
     $<TARGET_FILE:bx>