refactor(build): update CMake configurations and toolchain for macOS

- Modified CMake settings to ensure consistent use of the Homebrew LLVM/Clang installation on macOS.
- Added a new toolchain file to specify the correct compiler and header search paths, resolving potential conflicts.
- Updated CMake presets to enable the EMU build and set appropriate compiler flags.

Benefits:
- Enhances build reliability and compatibility on macOS by utilizing the Homebrew LLVM toolchain.
- Streamlines the build process with improved configuration management.

CMakePresets.json

@@ -17,7 +17,7 @@
         "YAZE_BUILD_APP": "ON",
         "YAZE_BUILD_LIB": "ON",
         "YAZE_BUILD_Z3ED": "ON",
-        "YAZE_BUILD_EMU": "OFF"
+        "YAZE_BUILD_EMU": "ON"
       }
     },
     {
@@ -57,8 +57,12 @@
         "lhs": "${hostSystemName}",
         "rhs": "Darwin"
       },
+      "toolchainFile": "${sourceDir}/cmake/llvm-brew.toolchain.cmake",
       "cacheVariables": {
-        "CMAKE_OSX_DEPLOYMENT_TARGET": "11.0"
+        "CMAKE_OSX_DEPLOYMENT_TARGET": "11.0",
+        "CMAKE_C_COMPILER": "/opt/homebrew/opt/llvm@18/bin/clang",
+        "CMAKE_CXX_COMPILER": "/opt/homebrew/opt/llvm@18/bin/clang++",
+        "CMAKE_CXX_FLAGS": "-isystem /opt/homebrew/opt/llvm@18/include/c++/v1"
       }
     },
     {
@@ -162,6 +166,7 @@
       "displayName": "macOS z3ed",
       "description": "macOS z3ed CLI with agent support",
       "inherits": "mac-ai",
+      "toolchainFile": "${sourceDir}/cmake/llvm-brew.toolchain.cmake",
       "binaryDir": "${sourceDir}/build",
       "cacheVariables": {
         "Z3ED_AI": "ON",
@@ -170,8 +175,6 @@
         "YAZE_BUILD_Z3ED": "ON",
         "YAZE_BUILD_EMU": "ON",
         "YAZE_BUILD_TESTS": "ON",
-        "YAZE_ENABLE_UI_TESTS": "ON",
-        "YAZE_ENABLE_IMGUI_TEST_ENGINE": "ON",
         "CMAKE_BUILD_TYPE": "Debug"
       }
     },