Enhance testing framework and UI integration for YAZE

- Added a comprehensive testing framework with support for unit, integration, and UI tests, improving overall test coverage and reliability.
- Integrated ImGui Test Engine for UI testing, allowing for real-time feedback and visualization of test results.
- Updated CMake configuration to conditionally include testing components based on build options, enhancing flexibility for developers.
- Introduced a new command in the CLI for running asset loading tests on ROMs, providing a straightforward way to validate functionality.
- Enhanced error handling and resource management during testing, ensuring stability and clarity in test execution.
- Improved user interface with a dedicated test dashboard for monitoring test progress and results, enhancing developer experience.

src/app/emu/emu.cc

@@ -22,7 +22,9 @@ int main(int argc, char **argv) {
 
   absl::FailureSignalHandlerOptions options;
   options.symbolize_stacktrace = true;
-  options.alarm_on_failure_secs = true;
+  options.use_alternate_stack = false;  // Disable alternate stack to avoid shutdown conflicts
+  options.alarm_on_failure_secs = false; // Disable alarm to avoid false positives during SDL cleanup
+  options.call_previous_handler = true;
   absl::InstallFailureSignalHandler(options);
 
   SDL_SetMainReady();