Revamp: Transition HarmonyLink to C++ with DLL support

This transformative commit marks the evolution of HarmonyLink from a Rust-based server-side application to a C++ implemented, C-compatible dynamic link library (DLL). We've restructured the codebase to streamline integration into games, eliminating the need for a server setup by end-users.

Key Changes:
- Introduced .gitattributes and .gitmodules to manage new dependencies and collaborations.
- Replaced the GitHub workflow files with CMake configurations to support the new C++ build system.
- Introduced a comprehensive set of header and implementation files defining the core functionality, platform-specific utilities, and cross-platform compatibility layers.
- Removed all Rust-specific files (Cargo.toml, Cargo.lock, etc.) and references to ensure a clean transition to the C++ environment.
- Implemented new testing mechanisms within HarmonyLinkTest to ensure robustness and reliability of the DLL.
- Excised previous server-side components and models to focus on the DLL's direct integration into consumer applications.

This update is a direct response to community feedback, showcasing our commitment to adaptability and innovation. HarmonyLink 2.0 is now more accessible, efficient, and tailored for diverse gaming environments, providing developers with an unparalleled level of hardware-software harmony.

Please refer to the updated README for more details on the new structure and how to integrate HarmonyLink 2.0 into your projects.

HarmonyLinkTest/CMakeLists.txt

@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.10)
+project(HarmonyLinkTest)
+
+# Specify the C++ standard
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+
+# Automatically add all .cpp and .h/.hpp files in the src directory
+file(GLOB_RECURSE TEST_SOURCES "src/*.cpp")
+file(GLOB_RECURSE TEST_HEADERS "src/*.h" "src/*.hpp")
+
+# Add executable
+add_executable(HarmonyLinkTest ${TEST_SOURCES} ${TEST_HEADERS})
+
+# Link the HarmonyLinkLib with HarmonyLinkTest
+target_link_libraries(HarmonyLinkTest PRIVATE HarmonyLinkLib)
+
+# Set output directories for all build types
+foreach(TYPE IN ITEMS DEBUG RELEASE)
+    string(TOUPPER ${TYPE} TYPE_UPPER)
+    set_target_properties(${PROJECT_NAME} PROPERTIES
+        RUNTIME_OUTPUT_DIRECTORY_${TYPE_UPPER} "${CMAKE_BINARY_DIR}/bin/${TYPE}/${PROJECT_NAME}"
+        LIBRARY_OUTPUT_DIRECTORY_${TYPE_UPPER} "${CMAKE_BINARY_DIR}/bin/${TYPE}/${PROJECT_NAME}"
+        ARCHIVE_OUTPUT_DIRECTORY_${TYPE_UPPER} "${CMAKE_BINARY_DIR}/bin/${TYPE}/${PROJECT_NAME}"
+    )
+endforeach()
+
+add_custom_command(TARGET HarmonyLinkTest POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+    "$<TARGET_FILE:HarmonyLinkLib>"
+    "$<TARGET_FILE_DIR:HarmonyLinkTest>")