refactor(cmake): simplify ImGui test engine integration and feature flags

- Updated CMake configuration to always include the ImGui Test Engine when tests are enabled, removing conditional checks for UI tests.
- Simplified feature flag management by enabling JSON and gRPC by default, with a minimal build option to disable only the most expensive features.
- Enhanced status messages to provide clearer feedback on build configurations and feature availability.

Benefits:
- Streamlined integration of the ImGui Test Engine for testing purposes.
- Improved clarity in feature flag settings, making it easier to manage build configurations.

test/test_utils.cc

@@ -6,16 +6,12 @@ namespace test {
 namespace gui {
 
 void LoadRomInTest(ImGuiTestContext* ctx, const std::string& rom_path) {
-#ifdef YAZE_ENABLE_IMGUI_TEST_ENGINE
     yaze::core::Controller* controller = (yaze::core::Controller*)ctx->Test->UserData;
     controller->OnEntry(rom_path);
-#endif
 }
 
 void OpenEditorInTest(ImGuiTestContext* ctx, const std::string& editor_name) {
-#ifdef YAZE_ENABLE_IMGUI_TEST_ENGINE
     ctx->MenuClick(absl::StrFormat("Editors/%s", editor_name).c_str());
-#endif
 }
 
 } // namespace gui