feat: add catch2 tests

CMakeLists.txt

@@ -1,11 +1,20 @@
 cmake_minimum_required(VERSION 3.10)
-project(node)
+project(enzo_project)
+
+set(AppExec enzo_gui)
+set(TestExec tests)
 
 find_package(Qt6 REQUIRED COMPONENTS Core Widgets)
 qt_standard_project_setup()
 
-qt_add_executable(test
+
+qt_add_executable(${AppExec}
     src/main.cpp
 )
 
-target_link_libraries(test PRIVATE Qt6::Core Qt6::Widgets)
+target_link_libraries(${AppExec} PRIVATE Qt6::Core Qt6::Widgets)
+
+# tests
+add_executable(${TestExec} tests/main-tests.cpp)
+find_package(Catch2 3 REQUIRED)
+target_link_libraries(${TestExec} PRIVATE Catch2::Catch2WithMain)