chore(cmake): add JSON include directory to test configuration

- Included the JSON library directory in the test CMake configuration to support JSON functionalities in tests.
- This addition enhances the testing environment by providing necessary dependencies for JSON handling.

Benefits:
- Improved testing capabilities by integrating JSON support.
- Streamlined CMake configuration for better modularity in test setups.

test/CMakeLists.txt

@@ -18,6 +18,7 @@ if(YAZE_BUILD_TESTS)
       ${CMAKE_SOURCE_DIR}/src/lib/imgui/backends
       ${CMAKE_SOURCE_DIR}/src/lib/imgui_test_engine
       ${CMAKE_SOURCE_DIR}/src/lib/SDL/include
+      ${CMAKE_SOURCE_DIR}/third_party/json/include
       ${CMAKE_BINARY_DIR}/src/lib/SDL/include
       ${PROJECT_BINARY_DIR}
     )