move tests to core as it contains tests on core

src/core/CMakeLists.txt

@@ -21,3 +21,20 @@ set_target_properties(core PROPERTIES
     CXX_STANDARD_REQUIRED ON
     POSITION_INDEPENDENT_CODE True
     )
+
+add_executable(runtests 
+    test/main.cpp
+    test/tst_CsvWriter.cpp
+    test/tst_expected.cpp
+    test/tst_PasswordManager.cpp
+    test/tst_scopeguard.cpp
+    test/tst_SqlLexer.cpp
+    )
+    
+target_link_libraries(runtests 
+    core 
+    gtest
+    Threads::Threads
+    )
+
+add_test(tests runtests)